title
Introduction to Voice Over IP

description
Follow the Insanity at: https://www.FailedNormal.com Downloadable Podcasts at: https://failednormal.podbean.com iTunes: https://itunes.apple.com/us/podcast/failed-normal/id1349818284?mt=2 Info Level: Beginner Date Created: August 8, 2010 Length of Class: 60 Minutes Tracks Telephone Systems Prerequisites Introduction to Telephone Systems Introduction to Convergence Purpose of Class This class discusses the basic components and requirements for a business or enterprise Voice Over IP telephone system. Topics Covered VoIP Servers VoIP Clients Gateways Protocols Codecs Network Latency QOS Unified Communications Class Notes VoIP Servers VoIP Servers route calls like a traditional PBX There are proprietary and Open Source versions of VoIP Server software VoIP Clients VoIP "phones" are all client computers Hard Phones are computers made to look like traditional phones Soft Phones are software that is installed on a computer so that the computer can be used as a phone Gateways connect VoIP networks to the PSTN (Public Switched Telephone Network) Protocols VoIP Systems use protocols for servers and clients to communicate SIP is a standards based protocol that numerous vendors use Codecs are used to encode voice communication Codecs determine the Sound Quality and the Bandwidth usage of a call Most VoIP servers come with codecs that you can use without any extra fees. If you need better codecs they can be purchased Network Latency and QOS Network latency is the time it takes for data to get from point A to point B Standard telephones have a latency of 45ms, VoIP can have a latency of up to 75-100ms. QOS -- Quality Of Service -- is a feature of networking equipment that allows the equipment to prioritize network traffic based on what it is. Unified Communications is the idea that computer programs and server should be able to work with telephone communications.

detail
{'title': 'Introduction to Voice Over IP', 'heatmap': [{'end': 481.528, 'start': 441.114, 'weight': 1}], 'summary': 'Provides comprehensive insights into voice over ip technology, covering topics such as voip fundamentals, integration with tcp/ip network, server configuration, sip protocol, qos, and low latency, with an emphasis on cost savings and enterprise functionality.', 'chapters': [{'end': 233.795, 'segs': [{'end': 35.481, 'src': 'embed', 'start': 5.509, 'weight': 1, 'content': [{'end': 6.19, 'text': 'Hello again.', 'start': 5.509, 'duration': 0.681}, {'end': 15.7, 'text': "as you know, I'm Eli, the Computer Guy over here for Everyman IT, and today's class is Introduction to VoIP or Introduction to Voice over IP.", 'start': 6.19, 'duration': 9.51}, {'end': 20.766, 'text': 'So Voice over IP is one of the latest and greatest and most wonderful technologies.', 'start': 15.76, 'duration': 5.006}, {'end': 26.492, 'text': "Really it's been around or it's been pushed out for commercial use in about the last 10 years.", 'start': 21.347, 'duration': 5.145}, {'end': 35.481, 'text': 'This class today is going to be a foundation for understanding VoIP within a business or enterprise class environment.', 'start': 27.453, 'duration': 8.028}], 'summary': 'Eli introduces an introduction to voip, a technology around for 10 years, for business and enterprise use.', 'duration': 29.972, 'max_score': 5.509, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg5509.jpg'}, {'end': 83.981, 'src': 'embed', 'start': 50.314, 'weight': 0, 'content': [{'end': 54.698, 'text': 'This class is going to be about the fundamental concept.', 'start': 50.314, 'duration': 4.384}, {'end': 62.464, 'text': "So, if you want to connect a business to voice over IP, we're going to be talking about VoIP servers, VoIP clients,", 'start': 54.718, 'duration': 7.746}, {'end': 64.726, 'text': 'things called hard phones and soft phones.', 'start': 62.464, 'duration': 2.262}, {'end': 66.107, 'text': "We're going to talk about gateways.", 'start': 64.745, 'duration': 1.362}, {'end': 67.489, 'text': "We're going to talk about the protocols.", 'start': 66.127, 'duration': 1.362}, {'end': 69.31, 'text': "We're going to talk about codecs.", 'start': 67.749, 'duration': 1.561}, {'end': 75.255, 'text': "We're going to talk about latency and quality of service and basically the foundation concept.", 'start': 69.37, 'duration': 5.885}, {'end': 83.981, 'text': "So, if you're looking at migrating an entire business whether there are five people or a thousand people to a voice over IP system,", 'start': 75.295, 'duration': 8.686}], 'summary': 'Learn about voip fundamentals, servers, clients, hard/soft phones, gateways, protocols, codecs, latency, and quality of service for business migration.', 'duration': 33.667, 'max_score': 50.314, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg50314.jpg'}, {'end': 134.794, 'src': 'embed', 'start': 111.004, 'weight': 2, 'content': [{'end': 119.468, 'text': 'So the first thing that we need to talk about are VoIP or voice over IP servers, or you may also hear them termed IP PBXs.', 'start': 111.004, 'duration': 8.464}, {'end': 128.131, 'text': 'So voice over IP servers are the main servers that route your calls through voice over IP phones or devices.', 'start': 119.928, 'duration': 8.203}, {'end': 134.794, 'text': 'So we talked about in the introduction to telephone class and all that where a normal phone system has a PBX.', 'start': 128.531, 'duration': 6.263}], 'summary': 'Voip servers route calls through voip phones or devices.', 'duration': 23.79, 'max_score': 111.004, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg111004.jpg'}, {'end': 199.514, 'src': 'embed', 'start': 175.488, 'weight': 3, 'content': [{'end': 183.11, 'text': "Like I say, right now, you may think I'm splitting hairs between a telephone system and a data system that transmits real-time audio communication.", 'start': 175.488, 'duration': 7.622}, {'end': 190.251, 'text': 'But when you get into legal aspects of the difference between a telephone and a data system, these are huge.', 'start': 183.55, 'duration': 6.701}, {'end': 199.514, 'text': 'Congress, local legislatures, et cetera, have mandated a whole hell of a lot of laws about how a telephone system has to work.', 'start': 190.371, 'duration': 9.143}], 'summary': 'Legal differences between telephone and data systems have significant implications and are subject to numerous laws and regulations.', 'duration': 24.026, 'max_score': 175.488, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg175488.jpg'}], 'start': 5.509, 'title': 'Voip technology for business', 'summary': 'Covers fundamentals of voip technology, such as servers, clients, phones, gateways, protocols, codecs, latency, and quality of service, aimed at migrating businesses. it discusses the role of voip servers in routing calls and emphasizes the legal and regulatory differences from traditional telephone systems, impacting businesses and enterprises.', 'chapters': [{'end': 104.853, 'start': 5.509, 'title': 'Intro to voip for business', 'summary': 'Covers the fundamentals of voice over ip (voip) technology, including voip servers, clients, hard phones, soft phones, gateways, protocols, codecs, latency, and quality of service, aimed at migrating businesses to voip systems.', 'duration': 99.344, 'highlights': ['The class focuses on the fundamental concepts of VoIP technology, such as VoIP servers, clients, hard phones, soft phones, gateways, protocols, codecs, latency, and quality of service, crucial for migrating businesses to VoIP systems.', 'Voice over IP has been pushed out for commercial use in about the last 10 years, making it one of the latest and greatest technologies.', 'The class is tailored for those looking to connect a business to VoIP, providing essential knowledge for migrating an entire business, regardless of its size, to a VoIP system.', 'The class is specifically designed for the business or enterprise class world and not for casual users looking to set up simple Skype phones for personal use.']}, {'end': 157.121, 'start': 111.004, 'title': 'Voice over ip servers', 'summary': 'Discusses the role of voice over ip servers, also known as ip pbxs, in routing calls through voip phones and devices within a networking world.', 'duration': 46.117, 'highlights': ['Voice over IP servers, also known as IP PBXs, route calls through VoIP phones or devices within a networking world.', 'Traditional phone systems have a PBX within the building that handles telephones, call boxes, auto attendance, and all other phone-related functions.']}, {'end': 233.795, 'start': 157.801, 'title': 'Voice over ip importance', 'summary': 'Emphasizes the importance of understanding the distinction between a telephone system and a data system that transmits real-time audio communication, highlighting the significant legal and regulatory differences and the impact on businesses and enterprises.', 'duration': 75.994, 'highlights': ['Understanding the distinction between a telephone system and a data system transmitting real-time audio communication is crucial due to significant legal and regulatory differences, particularly in the business world.', 'The legal aspects of the difference between a telephone and a data system are substantial, with numerous laws mandated for telephone systems by Congress and local legislatures, while very few laws are imposed on data systems transmitting real-time audio communications.', 'The importance of discerning between a telephone system and a data system with real-time audio communication becomes increasingly significant as one delves into the legal aspects and implications for businesses and enterprises.']}], 'duration': 228.286, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg5509.jpg', 'highlights': ['The class focuses on the fundamental concepts of VoIP technology, crucial for migrating businesses to VoIP systems.', 'Voice over IP has been pushed out for commercial use in about the last 10 years, making it one of the latest and greatest technologies.', 'Voice over IP servers, also known as IP PBXs, route calls through VoIP phones or devices within a networking world.', 'Understanding the distinction between a telephone system and a data system transmitting real-time audio communication is crucial due to significant legal and regulatory differences, particularly in the business world.']}, {'end': 766.484, 'segs': [{'end': 261.046, 'src': 'embed', 'start': 234.235, 'weight': 0, 'content': [{'end': 244.059, 'text': "So the first thing to understand with these voice over IP servers or they're sometimes called IP PBXs is of course they use the TCP,", 'start': 234.235, 'duration': 9.824}, {'end': 245.44, 'text': 'IP Ethernet network.', 'start': 244.059, 'duration': 1.381}, {'end': 249.442, 'text': 'So basically all of your phones, the PBX, etc.', 'start': 245.86, 'duration': 3.582}, {'end': 253.863, 'text': "is going to use Ethernet and it's going to use TCP IP to communicate.", 'start': 249.562, 'duration': 4.301}, {'end': 261.046, 'text': 'So now, instead of having a telephone PBX with phones and everything in their own world,', 'start': 254.244, 'duration': 6.802}], 'summary': 'Voice over ip servers use tcp/ip ethernet network for communication.', 'duration': 26.811, 'max_score': 234.235, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg234235.jpg'}, {'end': 375.218, 'src': 'embed', 'start': 350.754, 'weight': 1, 'content': [{'end': 360.304, 'text': 'The first is you can have your client computers or your client telephones connect to the voice over IP server through the normal network.', 'start': 350.754, 'duration': 9.55}, {'end': 362.026, 'text': 'So you have a router, you have a switch, etc.', 'start': 360.324, 'duration': 1.702}, {'end': 368.552, 'text': 'You can also have analog or digital ports connected to the voice over IP server.', 'start': 362.726, 'duration': 5.826}, {'end': 375.218, 'text': "So some of these voice over IP servers, you'll actually be able to plug a normal telephone straight into it.", 'start': 368.992, 'duration': 6.226}], 'summary': 'Voice over ip allows client devices to connect via network or analog/digital ports.', 'duration': 24.464, 'max_score': 350.754, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg350754.jpg'}, {'end': 481.528, 'src': 'heatmap', 'start': 441.114, 'weight': 1, 'content': [{'end': 442.195, 'text': 'This is not Verizon.', 'start': 441.114, 'duration': 1.081}, {'end': 446.456, 'text': "It's like a company called OnSip.", 'start': 442.895, 'duration': 3.561}, {'end': 451.337, 'text': 'There are companies out there that will provide you IP trunk lines.', 'start': 447.656, 'duration': 3.681}, {'end': 454.918, 'text': "So you don't need normal telephone lines anymore.", 'start': 451.457, 'duration': 3.461}, {'end': 459.258, 'text': 'You can actually get all of your calls straight through the internet.', 'start': 455.338, 'duration': 3.92}, {'end': 463.459, 'text': 'So these companies will provide you voice over IP trunks.', 'start': 459.379, 'duration': 4.08}, {'end': 468.02, 'text': 'So the way calls can come in and out are either through the internet.', 'start': 463.839, 'duration': 4.181}, {'end': 470.781, 'text': 'You have one of these providers that provides you a voice over IP trunk.', 'start': 468.04, 'duration': 2.741}, {'end': 477.185, 'text': 'And so what happens is when you go to call out, your little phone connects to the voice over IP server.', 'start': 471.281, 'duration': 5.904}, {'end': 481.528, 'text': 'the voice over IP server then connects to those voice over IP trunks.', 'start': 477.185, 'duration': 4.343}], 'summary': 'Onsip offers ip trunk lines for calls through the internet.', 'duration': 40.414, 'max_score': 441.114, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg441114.jpg'}, {'end': 583.829, 'src': 'embed', 'start': 556.009, 'weight': 2, 'content': [{'end': 564.533, 'text': "and one of the most wonderful things in the world about the voice over IP system is now that we're doing everything over IP.", 'start': 556.009, 'duration': 8.524}, {'end': 573.924, 'text': "now that we're doing everything over an Ethernet network, this voice over IP server no longer has to be in our building.", 'start': 564.533, 'duration': 9.391}, {'end': 583.829, 'text': 'So you can actually have your Voice over IP server hosted on the outside world.', 'start': 574.704, 'duration': 9.125}], 'summary': 'Voice over ip system enables hosting servers outside the building.', 'duration': 27.82, 'max_score': 556.009, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg556009.jpg'}], 'start': 234.235, 'title': 'Voice over ip servers and tcp/ip network', 'summary': 'Discusses integrating voice over ip servers with tcp/ip ethernet network, emphasizing the shift to a unified network for phone systems, routers, switches, and computers. it also covers voice over ip server functions such as connecting to telephones, supporting analog or digital ports, enabling calls through ip trunks or normal phone lines, and the option to host the server externally, providing cost savings and enterprise functionality.', 'chapters': [{'end': 283.91, 'start': 234.235, 'title': 'Voice over ip servers and tcp/ip network', 'summary': 'Discusses the integration of voice over ip servers with tcp/ip ethernet network, emphasizing the shift to a unified network for phone systems, routers, switches, and computers.', 'duration': 49.675, 'highlights': ['Voice over IP servers or IP PBXs utilize TCP/IP Ethernet network for communication, integrating phone systems with the existing network infrastructure.', 'The integration results in a unified network for phone systems, routers, switches, and computers, replacing the traditional isolated telephone PBX setup.', 'This integration is a significant shift from the traditional telephone world, consolidating the communication infrastructure and emphasizing the use of TCP/IP for communication.']}, {'end': 766.484, 'start': 284.39, 'title': 'Voice over ip servers', 'summary': 'Discusses voice over ip servers, which can connect to telephones through a switch and router, support analog or digital ports, and enable calls through ip trunks or normal phone lines, with the option to host the server externally, providing cost savings and enterprise functionality.', 'duration': 482.094, 'highlights': ['Voice over IP servers can connect to telephones through a switch and router, supporting analog or digital ports, and can enable calls through IP trunks or normal phone lines. Voice over IP servers facilitate connections to telephones through a switch and router, supporting analog or digital ports, and enable calls through IP trunks or normal phone lines, providing flexibility in communication methods.', 'The option to host the voice over IP server externally offers cost savings and enterprise functionality. Hosting the voice over IP server externally can result in cost savings and enterprise functionality, eliminating the need for an expensive server within the building.', 'The voice over IP servers can be manufactured by normal companies or new companies offering free, open-source options, such as Asterisk or SIPX. Voice over IP servers can be manufactured by established companies like Avaya, Lucent, AT&T, Nortel, and Mitel, or by new companies offering free, open-source options like Asterisk or SIPX, providing cost-effective alternatives.']}], 'duration': 532.249, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg234235.jpg', 'highlights': ['Voice over IP servers integrate with TCP/IP Ethernet network, unifying phone systems, routers, switches, and computers.', 'Voice over IP servers connect to telephones through switch and router, supporting analog or digital ports, enabling calls through IP trunks or normal phone lines.', 'Hosting the voice over IP server externally offers cost savings and enterprise functionality, eliminating the need for an expensive server within the building.']}, {'end': 1023.413, 'segs': [{'end': 794.692, 'src': 'embed', 'start': 767.404, 'weight': 0, 'content': [{'end': 775.906, 'text': 'Again, the reason that this is very important is you can have the voice over IP, PBX or server inside your building,', 'start': 767.404, 'duration': 8.502}, {'end': 779.427, 'text': 'or you can simply pay for the service for somebody else to deal with it.', 'start': 775.906, 'duration': 3.521}, {'end': 784.668, 'text': 'So all these telephones and such will communicate out to that server in the outside world.', 'start': 779.487, 'duration': 5.181}, {'end': 787.889, 'text': 'This is a very, very huge, important thing.', 'start': 785.288, 'duration': 2.601}, {'end': 794.692, 'text': 'And again, like I said, if you want to experiment, like when we get to the end of this, and you want to experiment with Voice over IP a little bit,', 'start': 788.109, 'duration': 6.583}], 'summary': 'Voice over ip is important for communication, whether hosted internally or externally.', 'duration': 27.288, 'max_score': 767.404, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg767404.jpg'}, {'end': 861.442, 'src': 'embed', 'start': 806.478, 'weight': 1, 'content': [{'end': 811.381, 'text': "Again, there's Asterisk, there's Switchvox, and there's something called SIPX.", 'start': 806.478, 'duration': 4.903}, {'end': 814.523, 'text': "I'll put links to it at the bottom of this at the end.", 'start': 811.901, 'duration': 2.622}, {'end': 816.824, 'text': 'But this is a Voice over IP server.', 'start': 815.083, 'duration': 1.741}, {'end': 825.183, 'text': 'Okay, so we talked about the voice over IP server.', 'start': 822.501, 'duration': 2.682}, {'end': 829.705, 'text': 'So we have our VoIP server over here.', 'start': 825.883, 'duration': 3.822}, {'end': 832.006, 'text': 'And remember, this is a server.', 'start': 829.805, 'duration': 2.201}, {'end': 839.911, 'text': 'This is a computer that provides services to other computers on the network.', 'start': 833.447, 'duration': 6.464}, {'end': 841.051, 'text': "Remember, that's what a server is.", 'start': 839.951, 'duration': 1.1}, {'end': 845.234, 'text': "So although people call it like an IP PBX and all that garbage, it's really a server.", 'start': 841.091, 'duration': 4.143}, {'end': 846.834, 'text': "It's really a voice over IP server.", 'start': 845.254, 'duration': 1.58}, {'end': 861.442, 'text': 'So all your devices or clients because remember, since this is a server, clients connect to servers are going to connect to this voice over IP server.', 'start': 847.555, 'duration': 13.887}], 'summary': 'The transcript discusses various voice over ip servers such as asterisk, switchvox, and sipx, emphasizing the server-client structure and role of the server in providing services to other computers on the network.', 'duration': 54.964, 'max_score': 806.478, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg806478.jpg'}, {'end': 914.643, 'src': 'embed', 'start': 888.182, 'weight': 3, 'content': [{'end': 892.986, 'text': 'and that is going to be hard phones and soft phones.', 'start': 888.182, 'duration': 4.804}, {'end': 899.332, 'text': 'So what is the difference between those two things? A hard phone is a telephone.', 'start': 893.126, 'duration': 6.206}, {'end': 900.573, 'text': 'It looks like a telephone.', 'start': 899.512, 'duration': 1.061}, {'end': 902.894, 'text': 'It looks like a telephone that you would think is a telephone.', 'start': 900.613, 'duration': 2.281}, {'end': 904.616, 'text': "You know, it's gray or it's white or it's black.", 'start': 902.934, 'duration': 1.682}, {'end': 905.836, 'text': "It's got a little handset on it.", 'start': 904.656, 'duration': 1.18}, {'end': 914.643, 'text': 'And it is an actual device that basically all it does is provide telephone service or real-time audio communication service.', 'start': 906.637, 'duration': 8.006}], 'summary': 'Hard phones and soft phones differ in appearance and functionality, with hard phones being physical devices dedicated to providing telephone services.', 'duration': 26.461, 'max_score': 888.182, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg888182.jpg'}, {'end': 998.617, 'src': 'embed', 'start': 956.595, 'weight': 4, 'content': [{'end': 960.897, 'text': 'Hard phones are voice over IP phones that actually look like phones.', 'start': 956.595, 'duration': 4.302}, {'end': 965.98, 'text': "So if you walked up to it, if it looks like a phone, it talks like a phone, it's a hard phone basically.", 'start': 961.057, 'duration': 4.923}, {'end': 969.382, 'text': "If it's something that you would associate as a phone, then it is a phone.", 'start': 966, 'duration': 3.382}, {'end': 978.306, 'text': 'Now the next big thing to understand with the voice over IP clients is these are all computing devices.', 'start': 970.563, 'duration': 7.743}, {'end': 985.488, 'text': "So whether it's your iPhone, whether it's your computer or whether it's this hard phone that we've been talking about, these are all computer devices.", 'start': 978.746, 'duration': 6.742}, {'end': 988.81, 'text': 'The dumbest, the dumbest, dumbest,', 'start': 986.188, 'duration': 2.622}, {'end': 998.617, 'text': 'dumbest voice over IP hard phone is light years ahead than any phone that ever connected into any of the original PBXs.', 'start': 988.81, 'duration': 9.807}], 'summary': 'Hard phones are voice over ip devices and are essentially computing devices, surpassing traditional pbx-connected phones.', 'duration': 42.022, 'max_score': 956.595, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg956595.jpg'}], 'start': 767.404, 'title': 'Voice over ip servers and phone types', 'summary': 'Delves into the significance of voice over ip servers, exploring hosting options and free open source solutions like asterisk, switchvox, and sipx. additionally, it contrasts hard phones and soft phones, highlighting their distinct features and capabilities in real-time audio communication.', 'chapters': [{'end': 888.182, 'start': 767.404, 'title': 'Voice over ip server basics', 'summary': 'Discusses the importance of voice over ip servers and the options available, including the choice between hosting the server in-house or using a service, as well as the availability of free open source voice over ip solutions like asterisk, switchvox, and sipx. it also explains the role of the server in providing services to devices and clients on the network.', 'duration': 120.778, 'highlights': ['Voice over IP servers can be hosted in-house or accessed as a service, offering flexibility and cost-saving options for businesses. The chapter emphasizes the importance of choosing between hosting the voice over IP server inside the building or paying for a service, highlighting the flexibility and cost-saving options available to businesses.', 'Free open source Voice over IP solutions like Asterisk, Switchvox, and SIPX provide cost-effective alternatives for businesses. The transcript mentions the availability of free open source Voice over IP solutions like Asterisk, Switchvox, and SIPX, offering cost-effective alternatives for businesses seeking to experiment with Voice over IP.', "Voice over IP servers act as a central point for devices and clients to connect and communicate within a network. The chapter explains the role of Voice over IP servers as a central point for devices and clients to connect and communicate within a network, emphasizing the server's function in providing services to other devices."]}, {'end': 1023.413, 'start': 888.182, 'title': 'Difference between hard phones and soft phones', 'summary': 'Discusses the difference between hard phones and soft phones, explaining that hard phones are physical devices resembling traditional telephones, while soft phones are software that can be installed on various computing devices to enable real-time audio communication. it also emphasizes that hard phones are essentially advanced computing devices, surpassing traditional telephones in capabilities.', 'duration': 135.231, 'highlights': ['Hard phones are physical devices resembling traditional telephones, while soft phones are software that can be installed on various computing devices to enable real-time audio communication.', 'The dumbest voice over IP hard phone is light years ahead than any phone that ever connected into any of the original PBXs.', 'Hard phones are essentially advanced computing devices, surpassing traditional telephones in capabilities.']}], 'duration': 256.009, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg767404.jpg', 'highlights': ['Voice over IP servers can be hosted in-house or accessed as a service, offering flexibility and cost-saving options for businesses.', 'Free open source Voice over IP solutions like Asterisk, Switchvox, and SIPX provide cost-effective alternatives for businesses.', 'Voice over IP servers act as a central point for devices and clients to connect and communicate within a network.', 'Hard phones are physical devices resembling traditional telephones, while soft phones are software that can be installed on various computing devices to enable real-time audio communication.', 'The dumbest voice over IP hard phone is light years ahead than any phone that ever connected into any of the original PBXs.', 'Hard phones are essentially advanced computing devices, surpassing traditional telephones in capabilities.']}, {'end': 1290.406, 'segs': [{'end': 1071.992, 'src': 'embed', 'start': 1023.814, 'weight': 0, 'content': [{'end': 1026.515, 'text': 'So this hard phone is actually a computer.', 'start': 1023.814, 'duration': 2.701}, {'end': 1035.482, 'text': 'And when you go in to configure hard phones, so these are phones that look like phones, you will actually do so through a web interface.', 'start': 1026.556, 'duration': 8.926}, {'end': 1039.223, 'text': 'So I used to love the Polycom hard phones.', 'start': 1035.602, 'duration': 3.621}, {'end': 1043.748, 'text': 'You would go to the IP address for that phone.', 'start': 1039.805, 'duration': 3.943}, {'end': 1049.452, 'text': 'When you open it up, there is a little web browser, because that little thing is actually a web server,', 'start': 1044.508, 'duration': 4.944}, {'end': 1055.197, 'text': 'and you would configure everything through the web server that resides on that hard phone.', 'start': 1049.452, 'duration': 5.745}, {'end': 1058.36, 'text': 'So like I say, these things actually do have brain power.', 'start': 1055.557, 'duration': 2.803}, {'end': 1062.123, 'text': 'Even the hard phones are computers that simply look like phones.', 'start': 1058.56, 'duration': 3.563}, {'end': 1068.909, 'text': 'now the final thing to talk about with these voice over ip clients or devices because, like i say, you know, it can be an iphone,', 'start': 1062.703, 'duration': 6.206}, {'end': 1071.992, 'text': 'it can be a computer, it can be a hard phone,', 'start': 1068.909, 'duration': 3.083}], 'summary': 'Hard phones are essentially computers with web interfaces for configuration, even though they look like traditional phones.', 'duration': 48.178, 'max_score': 1023.814, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg1023814.jpg'}, {'end': 1145.589, 'src': 'embed', 'start': 1095.358, 'weight': 2, 'content': [{'end': 1104.452, 'text': "So, in this Voice over IP server, if you're setting up, let's say, extension 105, You would say extension 105,.", 'start': 1095.358, 'duration': 9.094}, {'end': 1109.876, 'text': 'the username is x and the password is x.', 'start': 1104.452, 'duration': 5.424}, {'end': 1112.218, 'text': 'And then you would set a whole bunch of other configurations.', 'start': 1109.876, 'duration': 2.342}, {'end': 1121.206, 'text': "So if you're configuring an account in the Voice over IP server, there's probably 10 or 20 different configurations that you can do.", 'start': 1112.258, 'duration': 8.948}, {'end': 1129.253, 'text': 'But the big ones to understand is that you plug in the extension, you plug in a username, and you plug in a password.', 'start': 1121.566, 'duration': 7.687}, {'end': 1140.123, 'text': "Why I say these are the most important things is because for a voice over IP client you then go to the client, whether it's the iPod or iPad,", 'start': 1129.853, 'duration': 10.27}, {'end': 1145.589, 'text': "whether it's the computer or whether it's this hard phone, and inside even the hard phone.", 'start': 1140.123, 'duration': 5.466}], 'summary': 'Configuring a voice over ip server involves setting up extensions, usernames, and passwords, along with 10-20 other configurations.', 'duration': 50.231, 'max_score': 1095.358, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg1095358.jpg'}, {'end': 1300.476, 'src': 'embed', 'start': 1272.654, 'weight': 4, 'content': [{'end': 1274.935, 'text': "They're still computers but they are built to look like phones.", 'start': 1272.654, 'duration': 2.281}, {'end': 1281.9, 'text': 'Soft phones are pieces of software you install into normal looking computers to make them act like a phone.', 'start': 1275.596, 'duration': 6.304}, {'end': 1290.406, 'text': 'So, like I said, if you have a normal computer, you have a normal laptop computer, you have a netbook computer, you have an ipod or iphone,', 'start': 1281.92, 'duration': 8.486}, {'end': 1300.476, 'text': 'you would install a soft phone onto it and that allows that computer to now connect to the voice over ip server and it allows that computer to now act like a telephone.', 'start': 1290.406, 'duration': 10.07}], 'summary': 'Soft phones turn computers into phones for voip communication.', 'duration': 27.822, 'max_score': 1272.654, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg1272654.jpg'}], 'start': 1023.814, 'title': 'Configuring hard phones and setting up voice over ip server', 'summary': 'Explains that hard phones are computers configured through a web interface and discusses the versatility of voice over ip clients. it also explains the process of setting up user accounts on a voice over ip server, emphasizing the importance of configuring extensions, usernames, and passwords, with approximately 10 to 20 different configurations possible for each account.', 'chapters': [{'end': 1071.992, 'start': 1023.814, 'title': 'Configuring hard phones as computers', 'summary': 'Explains that hard phones are actually computers that can be configured through a web interface, and even though they look like phones, they have brain power. it also discusses the versatility of voice over ip clients or devices, including iphones, computers, and hard phones.', 'duration': 48.178, 'highlights': ['Hard phones are actually computers that can be configured through a web interface, resembling phones but with brain power.', 'Configuring hard phones is done through a web server that resides on the phone using the IP address, making them versatile and powerful.', 'Voice over IP clients or devices, such as iPhones, computers, and hard phones, are discussed for their flexibility and application in the context of the topic.']}, {'end': 1290.406, 'start': 1071.992, 'title': 'Setting up voice over ip server', 'summary': 'Explains the process of setting up user accounts on a voice over ip server, emphasizing the importance of configuring extensions, usernames, and passwords, with approximately 10 to 20 different configurations possible for each account.', 'duration': 218.414, 'highlights': ['The process of setting up user accounts on a Voice over IP server involves configuring extensions, usernames, and passwords, with approximately 10 to 20 different configurations possible for each account. This emphasizes the importance of setting up extensions, usernames, and passwords, with around 10 to 20 different configurations per account.', 'The significance of providing correct username and password combinations for accessing extensions on the Voice over IP server is crucial, as any mistake will lead to the server denying access. Emphasizes the crucial nature of providing the correct username and password combination to access extensions on the Voice over IP server.', 'Explanation of the distinction between hard phones and soft phones, with hard phones being dedicated devices and soft phones being software installed on regular computers or mobile devices to enable voice communication. Explains the difference between hard phones and soft phones, where hard phones are dedicated devices, and soft phones are software installed on regular computers or mobile devices to enable voice communication.']}], 'duration': 266.592, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg1023814.jpg', 'highlights': ['Configuring hard phones through a web server using the IP address makes them versatile and powerful.', 'Voice over IP clients, such as iPhones, computers, and hard phones, are discussed for their flexibility and application.', 'The process of setting up user accounts on a Voice over IP server involves configuring extensions, usernames, and passwords, with approximately 10 to 20 different configurations possible for each account.', 'The significance of providing correct username and password combinations for accessing extensions on the Voice over IP server is crucial.', 'Explanation of the distinction between hard phones and soft phones, with hard phones being dedicated devices and soft phones being software installed on regular computers or mobile devices to enable voice communication.']}, {'end': 1602.312, 'segs': [{'end': 1377.602, 'src': 'embed', 'start': 1290.406, 'weight': 0, 'content': [{'end': 1300.476, 'text': 'you would install a soft phone onto it and that allows that computer to now connect to the voice over ip server and it allows that computer to now act like a telephone.', 'start': 1290.406, 'duration': 10.07}, {'end': 1306.162, 'text': "one of the biggest things and the biggest things that i've seen that causes people problems in the real world is understand,", 'start': 1300.476, 'duration': 5.686}, {'end': 1313.388, 'text': 'within this voice over ip server, you are now going to create user accounts, just like you would create, like I say, for a Windows server,', 'start': 1306.162, 'duration': 7.226}, {'end': 1314.469, 'text': 'for a Linux server, etc.', 'start': 1313.388, 'duration': 1.081}, {'end': 1320.294, 'text': "You're going to tell it the extension, you're going to tell it a username, and you're going to tell it a password, plus about 20 or 30 other things.", 'start': 1315.01, 'duration': 5.284}, {'end': 1324.818, 'text': 'The biggest point is this device out here.', 'start': 1320.934, 'duration': 3.884}, {'end': 1331.803, 'text': 'you will have to go in and you will have to configure within that device and say I want extension 105,.', 'start': 1324.818, 'duration': 6.985}, {'end': 1334.846, 'text': 'the username is this and the password is this', 'start': 1331.803, 'duration': 3.043}, {'end': 1340.11, 'text': 'If any of this is incorrect, the whole kit and caboodle is not going to work.', 'start': 1335.266, 'duration': 4.844}, {'end': 1344.059, 'text': 'So this is voice over IP clients in a nutshell.', 'start': 1340.451, 'duration': 3.608}, {'end': 1349.252, 'text': "Like I say, it's not too complicated as long as you can follow all these little lines.", 'start': 1344.079, 'duration': 5.173}, {'end': 1358.554, 'text': "So we've talked about the servers, so the voice over IP servers.", 'start': 1355.253, 'duration': 3.301}, {'end': 1364.137, 'text': 'These are servers that provide services to other computers on the network.', 'start': 1358.794, 'duration': 5.343}, {'end': 1366.978, 'text': 'Those other computers are voice over IP clients.', 'start': 1364.277, 'duration': 2.701}, {'end': 1369.879, 'text': 'Those clients can be either hard phones or soft phones.', 'start': 1367.358, 'duration': 2.521}, {'end': 1370.879, 'text': "They're all computers.", 'start': 1369.959, 'duration': 0.92}, {'end': 1374.361, 'text': "Like I say, even that thing that looks like a phone ain't a phone.", 'start': 1370.919, 'duration': 3.442}, {'end': 1377.602, 'text': "It's actually a computer that looks like a phone.", 'start': 1374.401, 'duration': 3.201}], 'summary': 'Setting up voice over ip clients involves creating user accounts with extensions, usernames, and passwords, and configuring the devices; servers provide services to other computers on the network.', 'duration': 87.196, 'max_score': 1290.406, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg1290406.jpg'}, {'end': 1530.879, 'src': 'embed', 'start': 1499.644, 'weight': 4, 'content': [{'end': 1505.269, 'text': 'These gateways connected between the voice over IP world and the normal telephone world.', 'start': 1499.644, 'duration': 5.625}, {'end': 1512.675, 'text': 'Why this was important way back in the day when I was first learning about voice over IP ten whole years ago,', 'start': 1505.889, 'duration': 6.786}, {'end': 1518.219, 'text': 'is because when you worked for enterprise companies, see enterprise companies have lots and lots and lots of offices.', 'start': 1512.675, 'duration': 5.544}, {'end': 1522.883, 'text': 'So you may have your one office here in middle America, like the first company I worked for.', 'start': 1518.58, 'duration': 4.303}, {'end': 1530.879, 'text': "But then you have 1,000, or actually, let's say, they had 60 different offices all over the country, right?", 'start': 1523.404, 'duration': 7.475}], 'summary': 'Gateways connected voip and phone world for enterprise with 60 offices', 'duration': 31.235, 'max_score': 1499.644, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg1499644.jpg'}], 'start': 1290.406, 'title': 'Voice over ip implementation', 'summary': 'Covers the setup of a voice over ip client, including user account creation, device configuration, and troubleshooting. it also discusses the functions and benefits of voice over ip components and gateways, emphasizing cost reduction for enterprise companies with multiple offices.', 'chapters': [{'end': 1349.252, 'start': 1290.406, 'title': 'Voice over ip client setup', 'summary': 'Explains the process of setting up a voice over ip client, emphasizing the importance of user account creation, device configuration, and the potential issues that may arise, with a focus on ensuring correct information for successful functionality.', 'duration': 58.846, 'highlights': ['User account creation within the voice over IP server involves specifying the extension, username, and password, among other details, with incorrect information leading to functionality issues.', 'Installation of a soft phone on a computer enables it to connect to the voice over IP server, effectively functioning as a telephone.', 'Configuration of the device is crucial, as specifying the correct extension, username, and password is essential for the successful operation of the voice over IP client.']}, {'end': 1602.312, 'start': 1355.253, 'title': 'Voice over ip components and gateways', 'summary': 'Explains the role of voice over ip servers, clients, and gateways, including their functions in connecting different types of communication networks, with a focus on reducing long distance charges for enterprise companies with multiple offices.', 'duration': 247.059, 'highlights': ['Voice over IP servers provide services to voice over IP clients, which can be hard phones or soft phones, all functioning as computers. Voice over IP servers support voice over IP clients, which can be hard phones or soft phones functioning as computers. This emphasizes the role of servers in providing services to different types of clients.', 'Gateways connect voice over IP networks to normal telephone networks, enabling the conversion of voice over IP communications into regular telephone calls. Gateways serve to connect voice over IP networks with regular telephone networks, facilitating the conversion of voice over IP communications into standard telephone calls, illustrating the essential function of gateways in bridging different communication networks.', 'The use of gateways helps reduce long distance charges for enterprise companies with multiple offices, by connecting different offices to avoid long distance calls. Gateways play a crucial role in reducing long distance charges for enterprise companies with multiple offices by connecting different offices, thus avoiding long distance calls and saving on costs, highlighting the practical benefits of gateways for enterprise communications.']}], 'duration': 311.906, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg1290406.jpg', 'highlights': ['User account creation involves specifying extension, username, and password, with incorrect information leading to functionality issues.', 'Installation of a soft phone on a computer enables it to connect to the voice over IP server, effectively functioning as a telephone.', 'Configuration of the device is crucial, as specifying the correct extension, username, and password is essential for the successful operation of the voice over IP client.', 'Voice over IP servers provide services to voice over IP clients, which can be hard phones or soft phones, all functioning as computers.', 'Gateways connect voice over IP networks to normal telephone networks, enabling the conversion of voice over IP communications into regular telephone calls.', 'The use of gateways helps reduce long distance charges for enterprise companies with multiple offices, by connecting different offices to avoid long distance calls.']}, {'end': 1941.945, 'segs': [{'end': 1716.743, 'src': 'embed', 'start': 1688.203, 'weight': 0, 'content': [{'end': 1693.464, 'text': 'the call would get routed through the T1 connection they already had to their Seattle office.', 'start': 1688.203, 'duration': 5.261}, {'end': 1701.086, 'text': 'From the Seattle office, the call would get sent out a gateway that had a local telephone number on it and then call that client.', 'start': 1693.944, 'duration': 7.142}, {'end': 1703.949, 'text': 'and that saved people a lot of money.', 'start': 1701.286, 'duration': 2.663}, {'end': 1705.451, 'text': 'so what these gateways?', 'start': 1703.949, 'duration': 1.502}, {'end': 1712.778, 'text': 'the original main thing that they did was they connected the voice over ip network, uh, to the normal telephone network, like, say,', 'start': 1705.451, 'duration': 7.327}, {'end': 1716.743, 'text': 'one normal telephone network, you know, telephone poles, uh, etc.', 'start': 1712.778, 'duration': 3.965}], 'summary': 'T1 connection routed calls to seattle office, saved money by using gateways for voip to telephone network.', 'duration': 28.54, 'max_score': 1688.203, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg1688203.jpg'}, {'end': 1821.915, 'src': 'embed', 'start': 1793.964, 'weight': 1, 'content': [{'end': 1798.905, 'text': "So whether it's Skype to SIP, whether it's SIP to telephone, whether it's telephone to Skype, etc.", 'start': 1793.964, 'duration': 4.941}, {'end': 1804.387, 'text': 'Gateways are what connects these different types of communication infrastructure.', 'start': 1799.726, 'duration': 4.661}, {'end': 1813.082, 'text': "So we've talked about the servers, we've talked about the clients, now we've talked about the gateways.", 'start': 1809.997, 'duration': 3.085}, {'end': 1816.767, 'text': 'So those are the major components of the network.', 'start': 1813.222, 'duration': 3.545}, {'end': 1818.97, 'text': "That's what you're basically going to go out and buy.", 'start': 1816.827, 'duration': 2.143}, {'end': 1821.915, 'text': "You'll buy a voice over IP server, or you'll lease one from somewhere.", 'start': 1818.99, 'duration': 2.925}], 'summary': 'Gateways connect different communication infrastructures, essential components in networking.', 'duration': 27.951, 'max_score': 1793.964, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg1793964.jpg'}, {'end': 1867.454, 'src': 'embed', 'start': 1841.612, 'weight': 2, 'content': [{'end': 1846.896, 'text': 'So you probably know of TCP IP or Apple uses Bonjour or NetBui, etc.', 'start': 1841.612, 'duration': 5.284}, {'end': 1852.82, 'text': 'Well, Voice over IP uses protocols in order for the communication to happen.', 'start': 1846.976, 'duration': 5.844}, {'end': 1855.002, 'text': 'So this is basically just a network language.', 'start': 1852.84, 'duration': 2.162}, {'end': 1862.779, 'text': 'Now, the standard protocol that I would say you should try to buy systems that use is something called SIP.', 'start': 1855.563, 'duration': 7.216}, {'end': 1867.454, 'text': 'SIP stands for Session Initiated Protocol.', 'start': 1864.853, 'duration': 2.601}], 'summary': 'Voice over ip uses sip as the standard protocol for communication.', 'duration': 25.842, 'max_score': 1841.612, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg1841612.jpg'}], 'start': 1603.012, 'title': 'Voice over ip and gateways', 'summary': 'Details the workings of voice over ip and gateways, highlighting cost savings through t1 connections, and the role of gateways in connecting diverse communication networks like skype to sip or telephone.', 'chapters': [{'end': 1941.945, 'start': 1603.012, 'title': 'Voice over ip and gateways', 'summary': 'Explains how voice over ip and gateways work, detailing how companies saved money by using t1 connections and gateways to make local phone calls, and how gateways connect different types of communication networks such as skype to sip or telephone.', 'duration': 338.933, 'highlights': ['Companies saved money by using T1 connections and gateways to make local phone calls. By routing calls through existing T1 connections and using gateways to make local calls, companies saved significant amounts of money on long distance call charges.', 'Gateways connect different types of communication networks such as Skype to SIP or telephone. Gateways play a crucial role in connecting different types of communication networks, allowing for interoperability between systems like Skype, SIP, and traditional telephone networks.', 'SIP is the standard protocol for Voice over IP communication used by many companies. SIP, or Session Initiated Protocol, is widely implemented by various vendors for Voice over IP communication, enabling the use of SIP phones from different manufacturers and riding on top of TCP/IP.']}], 'duration': 338.933, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg1603012.jpg', 'highlights': ['Companies saved money by using T1 connections and gateways to make local phone calls.', 'Gateways play a crucial role in connecting different types of communication networks, allowing for interoperability between systems like Skype, SIP, and traditional telephone networks.', 'SIP is the standard protocol for Voice over IP communication used by many companies.']}, {'end': 2597.477, 'segs': [{'end': 1972.564, 'src': 'embed', 'start': 1941.985, 'weight': 0, 'content': [{'end': 1943.765, 'text': 'This is how they talk to each other.', 'start': 1941.985, 'duration': 1.78}, {'end': 1946.666, 'text': 'Now why I say SIP is important.', 'start': 1944.165, 'duration': 2.501}, {'end': 1947.787, 'text': 'SIP, SIP, SIP.', 'start': 1946.666, 'duration': 1.121}, {'end': 1954.711, 'text': 'you heard me say sip before sip is very important and you should buy systems that use sip as the protocol.', 'start': 1948.567, 'duration': 6.144}, {'end': 1963.297, 'text': "here's the reason why is because some of the major manufacturers of telephone systems they don't really like open source.", 'start': 1954.711, 'duration': 8.586}, {'end': 1965.699, 'text': "they don't like open operability.", 'start': 1963.297, 'duration': 2.402}, {'end': 1969.762, 'text': 'if you buy an avaya phone system, they want you to buy avaya phones.', 'start': 1965.699, 'duration': 4.063}, {'end': 1972.564, 'text': 'if you buy a nortel system, they want you to buy nortel phones.', 'start': 1969.762, 'duration': 2.802}], 'summary': 'Sip is important for interoperability. major manufacturers want you to buy their phones.', 'duration': 30.579, 'max_score': 1941.985, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg1941985.jpg'}, {'end': 2112.951, 'src': 'embed', 'start': 2082.783, 'weight': 1, 'content': [{'end': 2087.607, 'text': "I just think it's the future and if you buy something non-SIP, I just think that's kind of dumb.", 'start': 2082.783, 'duration': 4.824}, {'end': 2092.612, 'text': "The nice part with a SIP is what's good for you as a consultant or you as a business person is.", 'start': 2088.348, 'duration': 4.264}, {'end': 2101.46, 'text': "I've seen this is since Cisco deals with SIP and open source voice over IP servers deal with SIP.", 'start': 2092.612, 'duration': 8.848}, {'end': 2105.804, 'text': "I have seen fellow consultants were what they'll do for clients.", 'start': 2101.46, 'duration': 4.344}, {'end': 2112.951, 'text': 'If clients want to seem prestigious, if they want to seem more important than their bank account actually allows,', 'start': 2105.864, 'duration': 7.087}], 'summary': 'Sip is the future, beneficial for consultants and businesses, seen in cisco and open source voip servers.', 'duration': 30.168, 'max_score': 2082.783, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg2082783.jpg'}, {'end': 2169.122, 'src': 'embed', 'start': 2146.353, 'weight': 2, 'content': [{'end': 2155.376, 'text': 'Since SIP is the networking protocol that allows all these devices and voice over IP servers to communicate, you can mix and match at will.', 'start': 2146.353, 'duration': 9.023}, {'end': 2156.497, 'text': "So that's very important.", 'start': 2155.436, 'duration': 1.061}, {'end': 2159.718, 'text': 'Nortel Avaya.', 'start': 2157.757, 'duration': 1.961}, {'end': 2169.122, 'text': "a lot of the old fashioned telephone manufacturers use proprietary protocols and I'm telling you, it's a bad, bad, bad, bad, bad, bad, bad,", 'start': 2159.718, 'duration': 9.404}], 'summary': 'Sip enables communication between devices and voip servers, allowing flexibility in device usage. traditional telephone manufacturers often use proprietary protocols, which can be limiting.', 'duration': 22.769, 'max_score': 2146.353, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg2146353.jpg'}, {'end': 2255.305, 'src': 'embed', 'start': 2227.962, 'weight': 3, 'content': [{'end': 2232.384, 'text': 'Your codec is what determines how this happens.', 'start': 2227.962, 'duration': 4.422}, {'end': 2234.025, 'text': 'So if you want..', 'start': 2232.805, 'duration': 1.22}, {'end': 2242.749, 'text': 'really high quality communication voice over IP traffic and you have a lot of bandwidth.', 'start': 2236.882, 'duration': 5.867}, {'end': 2249.699, 'text': 'then you will use a codec that uses a lot of bandwidth and you have high definition audio communication back and forth.', 'start': 2242.749, 'duration': 6.95}, {'end': 2255.305, 'text': "say you're on a crappy network, you don't have a lot of bandwidth on the network.", 'start': 2250.64, 'duration': 4.665}], 'summary': 'Codec choice impacts voip quality and bandwidth usage.', 'duration': 27.343, 'max_score': 2227.962, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg2227962.jpg'}, {'end': 2519.842, 'src': 'embed', 'start': 2490.923, 'weight': 4, 'content': [{'end': 2499.808, 'text': 'Again, codecs, this is what encapsulates and decides the sound quality and the bandwidth usage of your voice over IP traffic.', 'start': 2490.923, 'duration': 8.885}, {'end': 2508.255, 'text': "So we've talked about the protocols now, we've talked about the codecs.", 'start': 2505.834, 'duration': 2.421}, {'end': 2514.639, 'text': 'The final thing that we need to talk about is network latency and QoS or quality of service.', 'start': 2508.616, 'duration': 6.023}, {'end': 2519.842, 'text': "Now, both of these things I've talked a lot about in other classes, so I'm going to run through them here,", 'start': 2514.759, 'duration': 5.083}], 'summary': 'Codecs affect sound quality and bandwidth usage in voip traffic. also, network latency and qos are crucial factors.', 'duration': 28.919, 'max_score': 2490.923, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg2490923.jpg'}], 'start': 1941.985, 'title': 'Importance of sip and voice over ip networking', 'summary': 'Discusses the significance of sip protocol in telephone systems, emphasizing its role in promoting interoperability, cost-effective solutions, and future-proof nature. it also covers the essentials of sip networking protocols, codecs, and quality of service in voice over ip communications to prioritize network bandwidth and ensure voice quality.', 'chapters': [{'end': 2145.832, 'start': 1941.985, 'title': 'Importance of sip in telephone systems', 'summary': 'Discusses the importance of sip protocol in telephone systems, highlighting how proprietary protocols limit interoperability and promote expensive vendor lock-in, while advocating for the flexibility and future-proof nature of sip, with examples of how it enables cost-effective solutions.', 'duration': 203.847, 'highlights': ['SIP protocol is crucial for interoperability and freedom of choice in telephone systems, unlike proprietary protocols which restrict users to buy phones from the same vendor, as seen with Avaya and Nortel systems.', 'Proprietary protocols, such as those used by Avaya and Skype, limit the choice of compatible phones and create vendor lock-in, which can be detrimental to users and consultants seeking cost-effective and flexible solutions.', 'SIP enables flexibility and cost-effectiveness, as demonstrated by the ability to use Cisco SIP phones with open source voice over IP servers, creating an appearance of an expensive system while being connected to a low-cost solution.']}, {'end': 2597.477, 'start': 2146.353, 'title': 'Voice over ip networking essentials', 'summary': 'Covers the importance of sip networking protocols, the role of codecs in determining voice quality and bandwidth usage, and the necessity of quality of service to ensure network bandwidth is prioritized for voice over ip communications in the face of potential network congestion and bandwidth usage by other applications.', 'duration': 451.124, 'highlights': ['Importance of SIP Networking Protocols SIP allows devices and voice over IP servers to communicate, offering the flexibility to mix and match different devices and servers, contrasting with proprietary protocols used by some old-fashioned telephone manufacturers, which can limit compatibility and flexibility.', 'Role of Codecs in Voice Quality and Bandwidth Usage Codecs determine the sound quality and bandwidth usage of voice over IP traffic, with high-quality communication requiring more bandwidth while lesser-grade codecs can reduce bandwidth usage, impacting the sound quality of the conversation.', 'Necessity of Quality of Service (QoS) QoS is crucial to ensure that network bandwidth is not monopolized by other applications, preventing potential network congestion and poor voice quality caused by bandwidth usage from non-essential applications, emphasizing the need for bandwidth prioritization for voice over IP communications.']}], 'duration': 655.492, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg1941985.jpg', 'highlights': ['SIP protocol promotes interoperability and freedom of choice in telephone systems, unlike proprietary protocols.', 'SIP enables flexibility and cost-effectiveness, allowing the use of Cisco SIP phones with open source voice over IP servers.', 'SIP networking protocols offer the flexibility to mix and match different devices and servers, contrasting with proprietary protocols.', "Codecs determine the sound quality and bandwidth usage of voice over IP traffic, impacting the conversation's sound quality.", 'Quality of Service (QoS) is crucial to ensure network bandwidth prioritization for voice over IP communications.']}, {'end': 3674.8, 'segs': [{'end': 3370.821, 'src': 'embed', 'start': 3341.098, 'weight': 2, 'content': [{'end': 3348.304, 'text': "Like I say, protocols are very important, and if I haven't said it enough, just remember SIP, S-I-P, Session Initiated Protocol.", 'start': 3341.098, 'duration': 7.206}, {'end': 3358.332, 'text': 'SIP is a standard protocol that lots and lots of manufacturers and vendors use for their voice over IP servers and voice over IP clients.', 'start': 3349.305, 'duration': 9.027}, {'end': 3362.235, 'text': 'Again, you can mix and match devices and servers.', 'start': 3358.432, 'duration': 3.803}, {'end': 3370.821, 'text': 'You can put a Cisco voice over IP phone onto an asterisk free open source voice over IP telephone server.', 'start': 3362.255, 'duration': 8.566}], 'summary': 'Sip is a widely used protocol for voice over ip, allowing flexibility in device and server integration.', 'duration': 29.723, 'max_score': 3341.098, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg3341098.jpg'}, {'end': 3522.616, 'src': 'embed', 'start': 3479.904, 'weight': 3, 'content': [{'end': 3484.447, 'text': 'We talked about the network latency and we talked about QoS or quality of service.', 'start': 3479.904, 'duration': 4.543}, {'end': 3490.511, 'text': "Network latency is important, especially when you're using a hosted voice over IP service.", 'start': 3485.028, 'duration': 5.483}, {'end': 3498.117, 'text': "So latency is how long it takes from a bit to get from where you're at to where it's going.", 'start': 3491.032, 'duration': 7.085}, {'end': 3507.004, 'text': "So when you're talking to your mom, a normal telephone call, it is 45 milliseconds from when you start speaking to when she hears it.", 'start': 3498.437, 'duration': 8.567}, {'end': 3512.568, 'text': 'With voice over IP, they say somewhere between 75 to 100 milliseconds is okay.', 'start': 3507.604, 'duration': 4.964}, {'end': 3514.149, 'text': "It's considered good sound quality.", 'start': 3512.588, 'duration': 1.561}, {'end': 3522.616, 'text': 'If you have more than 100 milliseconds in delay between when you start talking and when they hear you, you start talking over each other.', 'start': 3514.81, 'duration': 7.806}], 'summary': 'Network latency is crucial for voip, with 75-100ms considered good quality, while over 100ms leads to talking over each other.', 'duration': 42.712, 'max_score': 3479.904, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg3479904.jpg'}, {'end': 3574.051, 'src': 'embed', 'start': 3541.374, 'weight': 0, 'content': [{'end': 3544.015, 'text': "And then, as we've talked about a lot, a lot.", 'start': 3541.374, 'duration': 2.641}, {'end': 3552.078, 'text': 'a lot is QoS, quality of service and basically this is that your network packets are prioritized based on what type of traffic they are.', 'start': 3544.015, 'duration': 8.063}, {'end': 3558.66, 'text': "So you make voice over IP traffic far more important than normal computer traffic and you'll be good.", 'start': 3552.358, 'duration': 6.302}, {'end': 3565.144, 'text': 'Finally, we talked about the overall idea of unified communications.', 'start': 3559.52, 'duration': 5.624}, {'end': 3567.046, 'text': 'So this is where everything is going.', 'start': 3565.244, 'duration': 1.802}, {'end': 3574.051, 'text': "Since we now have voice over IP, so we're in something called convergence.", 'start': 3567.666, 'duration': 6.385}], 'summary': 'Qos prioritizes network packets based on traffic type. unified communications involve convergence with voice over ip.', 'duration': 32.677, 'max_score': 3541.374, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg3541374.jpg'}, {'end': 3646.369, 'src': 'embed', 'start': 3616.477, 'weight': 1, 'content': [{'end': 3617.498, 'text': 'You can call whoever you want.', 'start': 3616.477, 'duration': 1.021}, {'end': 3619.398, 'text': "If you're sitting in Outlook,", 'start': 3617.878, 'duration': 1.52}, {'end': 3627.94, 'text': 'you can make a call straight through Outlook and the call will be coming through your computer speakers and you talk into your computer microphone.', 'start': 3619.398, 'duration': 8.542}, {'end': 3632.481, 'text': 'So the idea with unified communications is everything gets unified.', 'start': 3628.18, 'duration': 4.301}, {'end': 3638.923, 'text': "So again, like I say, if you're looking at the Outlook scenario, we all know about inboxes, we all know about sent messages, etc.", 'start': 3632.521, 'duration': 6.402}, {'end': 3646.369, 'text': "Now imagine if Outlook can actually record the phone call when you're talking to somebody.", 'start': 3639.563, 'duration': 6.806}], 'summary': 'Unified communications integrate calling with outlook, enabling call recording and computer-based calling.', 'duration': 29.892, 'max_score': 3616.477, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg3616477.jpg'}], 'start': 2597.497, 'title': 'Importance of qos and low latency in voip', 'summary': 'Emphasizes the importance of quality of service in prioritizing network traffic for voice over ip, highlighting the need for low latency, with normal phone call latency at 45 milliseconds and voice over ip accepting 75 to 100 milliseconds. it also discusses unified communications and the significance of protocols like sip.', 'chapters': [{'end': 2787.014, 'start': 2597.497, 'title': 'Quality of service and network latency', 'summary': 'Discusses the importance of quality of service in prioritizing network traffic, particularly for voice over ip, and the impact of network latency on real-time communication, highlighting the need for low latency in voice over ip communications.', 'duration': 189.517, 'highlights': ['Quality of service prioritizes network traffic, ensuring voice over IP traffic takes precedence over other communications, reducing delay and ensuring smooth communication. Prioritizing voice over IP traffic, reducing delay in communication.', 'Network latency is critical for real-time communication, as it affects the time taken for bits to travel from the Voice over IP server to the building, emphasizing the need for low latency in voice over IP communications. Impact of network latency on real-time communication, importance of low latency for voice over IP.']}, {'end': 3051.215, 'start': 2788.055, 'title': 'Understanding network latency and unified communications', 'summary': 'Discusses network latency, with a normal phone call having a latency of 45 milliseconds and voice over ip accepting 75 to 100 milliseconds, and the concept of unified communications enabling advanced functionalities such as making phone calls directly from outlook.', 'duration': 263.16, 'highlights': ['A normal telephone call has a latency of 45 milliseconds, while voice over IP accepts 75 to 100 milliseconds for relatively okay communication. This quantifies the acceptable latency for both traditional phone calls and voice over IP, providing a clear understanding of the timing for effective communication.', 'Unified communications allow advanced functionalities like making phone calls directly from Outlook, enhancing communication capabilities. This showcases the advanced features of unified communications, such as integrating phone calls with email software, enabling a seamless communication experience.', 'Understanding network latency is vital for ensuring good communication quality, especially for voice over IP services, where latency over 100 milliseconds leads to a messy experience. Emphasizes the importance of managing network latency, particularly in voice over IP services, and highlights the threshold for latency that results in poor communication quality.']}, {'end': 3674.8, 'start': 3051.276, 'title': 'Introduction to voip', 'summary': 'Discusses the concepts of unified communication, including features like transcribing conversations, turning emails into voicemails, and the importance of protocols like sip, with network latency and qos also covered.', 'duration': 623.524, 'highlights': ['The chapter introduces the concept of unified communication, including features such as transcribing conversations and turning emails into voicemails, aiming to make communication more efficient and accessible.', 'The importance of protocols like SIP is emphasized, as it allows for the integration of different devices and servers, promoting interoperability and flexibility in voice over IP systems.', 'Network latency is addressed, with the acceptable delay for good sound quality in voice over IP calls mentioned to be between 75 to 100 milliseconds, and the potential issues with higher latency explained.', 'The concept of QoS (quality of service) is highlighted as a means to prioritize voice over IP traffic over regular computer traffic, ensuring a smoother communication experience.', 'The discussion on codecs explains their role in determining sound quality and bandwidth usage in voice over IP calls, with the option to purchase proprietary codecs for better performance in larger networks.']}], 'duration': 1077.303, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2x3Ie6VZ_sg/pics/2x3Ie6VZ_sg2597497.jpg', 'highlights': ['Quality of service prioritizes network traffic, ensuring voice over IP traffic takes precedence over other communications, reducing delay and ensuring smooth communication.', 'Unified communications allow advanced functionalities like making phone calls directly from Outlook, enhancing communication capabilities.', 'The importance of protocols like SIP is emphasized, as it allows for the integration of different devices and servers, promoting interoperability and flexibility in voice over IP systems.', 'Understanding network latency is vital for ensuring good communication quality, especially for voice over IP services, where latency over 100 milliseconds leads to a messy experience.', 'A normal telephone call has a latency of 45 milliseconds, while voice over IP accepts 75 to 100 milliseconds for relatively okay communication. This quantifies the acceptable latency for both traditional phone calls and voice over IP, providing a clear understanding of the timing for effective communication.']}], 'highlights': ['Voice over IP servers integrate with TCP/IP Ethernet network, unifying phone systems, routers, switches, and computers.', 'Voice over IP servers connect to telephones through switch and router, supporting analog or digital ports, enabling calls through IP trunks or normal phone lines.', 'Understanding the distinction between a telephone system and a data system transmitting real-time audio communication is crucial due to significant legal and regulatory differences, particularly in the business world.', 'Voice over IP servers can be hosted in-house or accessed as a service, offering flexibility and cost-saving options for businesses.', 'Free open source Voice over IP solutions like Asterisk, Switchvox, and SIPX provide cost-effective alternatives for businesses.', 'Hard phones are physical devices resembling traditional telephones, while soft phones are software that can be installed on various computing devices to enable real-time audio communication.', 'Configuring hard phones through a web server using the IP address makes them versatile and powerful.', 'The process of setting up user accounts on a Voice over IP server involves configuring extensions, usernames, and passwords, with approximately 10 to 20 different configurations possible for each account.', 'Gateways connect voice over IP networks to normal telephone networks, enabling the conversion of voice over IP communications into regular telephone calls.', 'SIP is the standard protocol for Voice over IP communication used by many companies.', 'SIP protocol promotes interoperability and freedom of choice in telephone systems, unlike proprietary protocols.', 'Quality of Service (QoS) is crucial to ensure network bandwidth prioritization for voice over IP communications.', 'Unified communications allow advanced functionalities like making phone calls directly from Outlook, enhancing communication capabilities.', 'Understanding network latency is vital for ensuring good communication quality, especially for voice over IP services, where latency over 100 milliseconds leads to a messy experience.']}