title
Introduction to Telephone Systems

description
Follow Eli on the Vlog Channel: https://www.youtube.com/user/EliComputerGuyLive Info Level: Beginner Presenter: Eli the Computer Guy Date Created: August 2, 2010 Length of Class: 54 Minutes Tracks Telephone Systems Prerequisites None Purpose of Class This class introduces students to the basic components of telephone systems. Topics Covered Public Switched Telephone Network Central Offices Trunk Lines PBX and Voicemail Systems PBX Stations Voicemail Subcribers Class Notes Introduction Telephone systems are not complicated if you understand how they work. A Word on VoIP VoIP is not a telephone system PSTN PSTN -- Public Switched Telephone Network is like the Internet, but for telephone communication NADP -- North American Dialing Plan -- Is the system for routing telephone calls. Central Office -- All telephone lines connect to a local central office Trunk Lines Every Trunk Line has a telephone number A Trunk Line allows for 1 incoming or outgoing call. You can have far more telephones in a building then you have trunk lines. Incoming Trunk lines are setup in Hunt Groups. If the main phone number is busy the call is automatically forwarded to the next number in the Hunt Group Incoming Hunt Groups are setup by your local telephone company. Outgoing calls can be routed to use selected trunk lines. This in configured in your PBX. PBX and Voicemail The PBX routes telephone calls The Voicemail system provides all audio messaging. (Voicemail boxes, Message Boards, and Auto Attendant Messages) Stations All devices that connect to the PBX are "Stations". This includes telephones, call boxes, intercom systems, etc. There are 2 types of stations; Analogue and Digital. Analogue and Digital stations have to be connected to appropriate ports on the PBX. An analogue phone cannot connect to a digital port and vice versa. Almost all fax machines and phones you buy at retail stores are analogue. If your new fax machine does not work it may be because it's plugged into a digital line. Subscribers Subscribers are users of the Voicemail system. Subscribers do not have to have stations Voicemail ports are the number of connections to the Voicemail system at any one time. This includes not just people retrieving their voicemail, but also incoming calls that connect to Auto Attendant messages. Final Thoughts Be careful before you touch! Most older telephone and voicemail systems were administered using a phone keypad, NOT and computer interface. If you mess something up it can be very difficult to rebuild a deleted Auto Attendant or such. Resources North American Numbering Plan PSTN -- Wikipedia

detail
{'title': 'Introduction to Telephone Systems', 'heatmap': [{'end': 585.511, 'start': 550.665, 'weight': 1}, {'end': 1170.132, 'start': 1129.705, 'weight': 0.952}, {'end': 1623.913, 'start': 1587.572, 'weight': 0.872}, {'end': 2215.382, 'start': 2172.632, 'weight': 0.91}], 'summary': 'Provides a comprehensive introduction to business telephone systems, covering pbx, voicemail systems, central offices, trunk lines, pstn routing, and the transition from analog to digital communication, while highlighting the north american dialing plan as a routing protocol for the telephone system.', 'chapters': [{'end': 370.574, 'segs': [{'end': 66.576, 'src': 'embed', 'start': 23.863, 'weight': 0, 'content': [{'end': 31.269, 'text': 'This is where you have something called a PBX and a voicemail system, which are basically like servers for telephones.', 'start': 23.863, 'duration': 7.406}, {'end': 34.051, 'text': "We're going to talk about the telephones and how they work.", 'start': 31.529, 'duration': 2.522}, {'end': 36.332, 'text': "We're going to talk about the central office.", 'start': 34.311, 'duration': 2.021}, {'end': 38.774, 'text': "We're going to talk about trunk lines, etc.", 'start': 36.352, 'duration': 2.422}, {'end': 46.2, 'text': "So today we're going to talk about all of the components that make a telephone system in a business or enterprise work.", 'start': 38.814, 'duration': 7.386}, {'end': 53.145, 'text': 'telephone systems are relatively easy systems to administer.', 'start': 48.001, 'duration': 5.144}, {'end': 60.331, 'text': "as a technologist, when you go out into the world, you are going to be presented problems with telephone systems, and i'm going to tell you,", 'start': 53.145, 'duration': 7.186}, {'end': 66.576, 'text': "telephone systems are not that complicated, but most of us don't have any formal training in telephone systems.", 'start': 60.331, 'duration': 6.245}], 'summary': 'Exploring telephone systems in businesses: pbx, voicemail, central office, trunk lines, and administration. most technologists lack formal training in telephone systems.', 'duration': 42.713, 'max_score': 23.863, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU23863.jpg'}, {'end': 127.693, 'src': 'embed', 'start': 99.637, 'weight': 4, 'content': [{'end': 104.726, 'text': "Once you understand that they are backwards and that's just how it is then everything gets pretty simple.", 'start': 99.637, 'duration': 5.089}, {'end': 107.091, 'text': 'So this class is Introduction to Telephone Systems.', 'start': 104.787, 'duration': 2.304}, {'end': 110.817, 'text': "Give me a second to put a few things together and then we'll dive in.", 'start': 107.712, 'duration': 3.105}, {'end': 122.389, 'text': 'Now, before we get into this class, I just have to say a word on voice over IP.', 'start': 116.846, 'duration': 5.543}, {'end': 127.693, 'text': "So you're thinking telephone systems, and nowadays telephone systems mean voice over IP.", 'start': 122.49, 'duration': 5.203}], 'summary': 'Introduction to telephone systems class highlights voice over ip technology as the modern standard.', 'duration': 28.056, 'max_score': 99.637, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU99637.jpg'}, {'end': 183.062, 'src': 'embed', 'start': 152.115, 'weight': 2, 'content': [{'end': 161.485, 'text': 'Voice over IP are data systems that transmit real time audio communications and full duplex.', 'start': 152.115, 'duration': 9.37}, {'end': 165.368, 'text': 'So basically, a telephone system is a telephone system.', 'start': 161.706, 'duration': 3.662}, {'end': 167.91, 'text': 'This is a specific type of technology.', 'start': 165.408, 'duration': 2.502}, {'end': 176.076, 'text': 'Voice over IP is a different type of technology that just happens to transmit voice in real time.', 'start': 168.491, 'duration': 7.585}, {'end': 183.062, 'text': 'So you can use voice over IP to do the same thing you would do as you would on a phone call.', 'start': 176.117, 'duration': 6.945}], 'summary': 'Voice over ip transmits real-time audio communications and full duplex, similar to a traditional phone system.', 'duration': 30.947, 'max_score': 152.115, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU152115.jpg'}, {'end': 284.894, 'src': 'embed', 'start': 254.78, 'weight': 1, 'content': [{'end': 258.182, 'text': 'So this is how telephone calls get routed.', 'start': 254.78, 'duration': 3.402}, {'end': 267.607, 'text': 'So basically, what happens on the Public Switched Telephone Network, PSTN, is you have things called central offices.', 'start': 258.543, 'duration': 9.064}, {'end': 273.15, 'text': 'so every area has a central office or a few central offices.', 'start': 267.607, 'duration': 5.543}, {'end': 275.17, 'text': "so i'm not sure how many.", 'start': 273.15, 'duration': 2.02}, {'end': 277.791, 'text': 'how many, uh, telephone lines?', 'start': 275.17, 'duration': 2.621}, {'end': 281.073, 'text': "a single central office, you know, does, but but it's quite a few.", 'start': 277.791, 'duration': 3.282}, {'end': 284.894, 'text': "so let's say baltimore may have five central offices.", 'start': 281.073, 'duration': 3.821}], 'summary': 'Telephone calls are routed through central offices in the public switched telephone network (pstn), with an estimated five central offices in baltimore.', 'duration': 30.114, 'max_score': 254.78, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU254780.jpg'}], 'start': 5.387, 'title': 'Telephone systems', 'summary': 'Provides an introduction to business and enterprise telephone systems, covering pbx and voicemail systems, central office, trunk lines, and the lack of formal training in telephone systems. it also explains the components and routing of calls through the public switched telephone network (pstn), and the distinction between traditional telephone systems and voice over ip. additionally, it touches on the north american dialing plan as a routing protocol for the telephone system.', 'chapters': [{'end': 80.586, 'start': 5.387, 'title': 'Intro to telephone systems', 'summary': 'Discusses business and enterprise telephone systems, covering pbx and voicemail systems, central office, trunk lines, and the lack of formal training in telephone systems, highlighting the ease of administration and common problems faced without formal training.', 'duration': 75.199, 'highlights': ['The chapter covers business and enterprise telephone systems, including PBX and voicemail systems, central office, and trunk lines.', 'It emphasizes the ease of administration for telephone systems, making it a relatively easy system to administer.', 'It points out the lack of formal training in telephone systems, leading to challenges in addressing problems such as auto attendant issues and trunk line problems.', 'The discussion highlights the common problem of not having the necessary knowledge to troubleshoot telephone system issues.']}, {'end': 370.574, 'start': 81.046, 'title': 'Intro to telephone systems', 'summary': 'Introduces traditional telephone systems, explaining the components and how calls are routed through the public switched telephone network (pstn), and emphasizes the distinction between telephone systems and voice over ip. it also touches on the north american dialing plan as a routing protocol for the telephone system.', 'duration': 289.528, 'highlights': ['The Public Switched Telephone Network (PSTN) is the network through which telephone calls are routed, with each area having central offices connecting to individual phone lines, and the North American Dialing Plan (NADP) serves as the routing protocol for the telephone system. Explains the concept and function of PSTN and its connection to central offices and individual phone lines, highlighting the role of NADP as the routing protocol for the telephone system.', 'The distinction between traditional telephone systems and voice over IP is emphasized, with an explanation of how voice over IP is a different technology that transmits voice in real time, while traditional telephone systems utilize normal voicemail boxes, AP. PBX control, and analog or digital telephone stations. Clarifies the difference between traditional telephone systems and voice over IP, outlining the technological disparities and functionalities of each system.', 'The chapter introduces the basics of telephone systems, emphasizing the simplicity once certain concepts are understood, and hints at the forthcoming classes on voice over IP and unified communications. Introduces the fundamental concepts of telephone systems and hints at future classes on voice over IP and unified communications, highlighting the simplicity of telephone systems upon understanding specific concepts.']}], 'duration': 365.187, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU5387.jpg', 'highlights': ['The chapter covers business and enterprise telephone systems, including PBX and voicemail systems, central office, and trunk lines.', 'The Public Switched Telephone Network (PSTN) is the network through which telephone calls are routed, with each area having central offices connecting to individual phone lines, and the North American Dialing Plan (NADP) serves as the routing protocol for the telephone system.', 'The distinction between traditional telephone systems and voice over IP is emphasized, with an explanation of how voice over IP is a different technology that transmits voice in real time, while traditional telephone systems utilize normal voicemail boxes, AP. PBX control, and analog or digital telephone stations.', 'It emphasizes the ease of administration for telephone systems, making it a relatively easy system to administer.', 'The chapter introduces the basics of telephone systems, emphasizing the simplicity once certain concepts are understood, and hints at the forthcoming classes on voice over IP and unified communications.']}, {'end': 1232.778, 'segs': [{'end': 428.792, 'src': 'embed', 'start': 394.032, 'weight': 0, 'content': [{'end': 396.232, 'text': "So that's what central offices are.", 'start': 394.032, 'duration': 2.2}, {'end': 399.874, 'text': 'So the PSTN is a public switch telephone network.', 'start': 396.332, 'duration': 3.542}, {'end': 404.255, 'text': 'Think of this as the internet for telephone systems, basically.', 'start': 400.214, 'duration': 4.041}, {'end': 411.159, 'text': 'then everybody connects to the telephone system through a central office.', 'start': 404.915, 'duration': 6.244}, {'end': 413.101, 'text': 'So you always have a central office.', 'start': 411.3, 'duration': 1.801}, {'end': 418.925, 'text': 'If you have a telephone with a dial tone, that connects back to the local central office and you actually really do.', 'start': 413.141, 'duration': 5.784}, {'end': 421.547, 'text': 'The wire that goes from your telephone.', 'start': 419.365, 'duration': 2.182}, {'end': 428.792, 'text': 'if you trace it, it actually really does trace a mile or two or three miles away, all the way back to the central office.', 'start': 421.547, 'duration': 7.245}], 'summary': 'The pstn is the telephone network connecting via central offices, with phone wires tracing back miles.', 'duration': 34.76, 'max_score': 394.032, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU394032.jpg'}, {'end': 515.975, 'src': 'embed', 'start': 486.649, 'weight': 1, 'content': [{'end': 494.574, 'text': 'you are going to have a little box that the wire that runs all the way from your central office is going to stop at,', 'start': 486.649, 'duration': 7.925}, {'end': 496.255, 'text': 'and this is called the D-mark point.', 'start': 494.574, 'duration': 1.681}, {'end': 500.678, 'text': 'D-E-M-A-R-C This is the D-mark point.', 'start': 496.696, 'duration': 3.982}, {'end': 509.664, 'text': 'So your telephone company is responsible for the telephone signal all the way up to this box on the side of your house or on your building.', 'start': 501.219, 'duration': 8.445}, {'end': 511.125, 'text': 'So this is the D-mark.', 'start': 510.045, 'duration': 1.08}, {'end': 515.975, 'text': 'If anything happens this side, you know.', 'start': 511.566, 'duration': 4.409}], 'summary': 'Telephone company responsible up to d-mark point on building for signal.', 'duration': 29.326, 'max_score': 486.649, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU486649.jpg'}, {'end': 585.511, 'src': 'heatmap', 'start': 550.665, 'weight': 1, 'content': [{'end': 554.707, 'text': 'That central office connects to other central offices and main trunk lines.', 'start': 550.665, 'duration': 4.042}, {'end': 561.131, 'text': 'And when you make a call like I say, all the way out to Las Vegas or to Boston or to Seattle or whatever,', 'start': 555.167, 'duration': 5.964}, {'end': 568.436, 'text': 'the call gets routed using something called a North American dialing plan over the PSTN, the public switched telephone network.', 'start': 561.131, 'duration': 7.305}, {'end': 572.379, 'text': "These are just basic overall concepts, but they're things that you should understand.", 'start': 568.876, 'duration': 3.503}, {'end': 582.928, 'text': 'So, now that you understand a little bit about central offices and a little bit about the public switch telephone network,', 'start': 578.444, 'duration': 4.484}, {'end': 585.511, 'text': 'the next thing we have to talk about are trunk lines.', 'start': 582.928, 'duration': 2.583}], 'summary': 'Central offices connect via trunk lines using north american dialing plan over pstn.', 'duration': 34.846, 'max_score': 550.665, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU550665.jpg'}, {'end': 653.307, 'src': 'embed', 'start': 621.778, 'weight': 2, 'content': [{'end': 624.739, 'text': 'or one person can be calling out and one person can be calling in.', 'start': 621.778, 'duration': 2.961}, {'end': 634.562, 'text': 'So basically, however many trunk lines you have determines how many calls can be going on with the outside world from your building.', 'start': 625.079, 'duration': 9.483}, {'end': 639.384, 'text': 'So normally, if you have, like, say, a 30 or 40 person office,', 'start': 635.082, 'duration': 4.302}, {'end': 645.466, 'text': 'you will normally have four trunk lines to be able to communicate with the outside world.', 'start': 639.384, 'duration': 6.082}, {'end': 653.307, 'text': "because most people figure, even with 40 people, there aren't going to be that many simultaneous calls going on.", 'start': 645.466, 'duration': 7.841}], 'summary': 'Typically, a 30-40 person office will have 4 trunk lines for communicating externally, allowing for multiple simultaneous calls.', 'duration': 31.529, 'max_score': 621.778, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU621778.jpg'}, {'end': 810.738, 'src': 'embed', 'start': 777.186, 'weight': 4, 'content': [{'end': 788.672, 'text': 'I had a hunt group that was created that said if 410-685-2808 is busy, forward the call automatically to 410-685-2885.', 'start': 777.186, 'duration': 11.486}, {'end': 794.234, 'text': 'If that is busy, forward the call automatically to 410-685-2880.', 'start': 789.352, 'duration': 4.882}, {'end': 799.595, 'text': 'And if that is busy, forward the call automatically to 410-685-2889.', 'start': 795.134, 'duration': 4.461}, {'end': 810.738, 'text': 'So basically, if any one of these phone numbers was busy, the call was automatically forwarded to the next number in the list.', 'start': 800.736, 'duration': 10.002}], 'summary': 'Hunt group forwards calls to 3 numbers in sequence if busy', 'duration': 33.552, 'max_score': 777.186, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU777186.jpg'}, {'end': 858.974, 'src': 'embed', 'start': 835.133, 'weight': 3, 'content': [{'end': 841.998, 'text': 'So you can only have as many simultaneous conversations going on as you have trunk lines.', 'start': 835.133, 'duration': 6.865}, {'end': 847.083, 'text': 'So like I say, if you have 40 people, I would suggest you have four trunk lines.', 'start': 842.118, 'duration': 4.965}, {'end': 849.565, 'text': 'If you have 10 people, maybe you can have three trunk lines.', 'start': 847.143, 'duration': 2.422}, {'end': 854.71, 'text': 'But basically, every incoming call and every outgoing call will take up one of your trunk lines.', 'start': 849.625, 'duration': 5.085}, {'end': 858.974, 'text': 'Once you run out of trunk lines, nobody can call in and nobody can call out.', 'start': 854.81, 'duration': 4.164}], 'summary': 'Maximize simultaneous conversations with 4 trunk lines for 40 people, 3 for 10 people.', 'duration': 23.841, 'max_score': 835.133, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU835133.jpg'}, {'end': 1126.442, 'src': 'embed', 'start': 1095.91, 'weight': 5, 'content': [{'end': 1101.557, 'text': 'you can set up rules and you can set up out-calling groups within the PBX.', 'start': 1095.91, 'duration': 5.647}, {'end': 1104.04, 'text': 'The PBX is basically the telephone server.', 'start': 1101.617, 'duration': 2.423}, {'end': 1108.264, 'text': 'and you can put in all kinds of insane rules in the pbx.', 'start': 1104.56, 'duration': 3.704}, {'end': 1111.567, 'text': "and, like i say, we'll talk about that, uh, in the call routing class.", 'start': 1108.264, 'duration': 3.303}, {'end': 1112.909, 'text': 'but understand so.', 'start': 1111.567, 'duration': 1.342}, {'end': 1118.114, 'text': 'so calling out using the trunk lines gets programmed into the pbx coming in,', 'start': 1112.909, 'duration': 5.205}, {'end': 1126.442, 'text': 'gets programmed at the central office you call verizon or quest or at t or bell atlantic going out, you program inside your own pbx.', 'start': 1118.114, 'duration': 8.328}], 'summary': 'Set up rules and out-calling groups in pbx, program trunk lines for call routing.', 'duration': 30.532, 'max_score': 1095.91, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU1095910.jpg'}, {'end': 1170.132, 'src': 'heatmap', 'start': 1129.705, 'weight': 0.952, 'content': [{'end': 1135.75, 'text': "Like I say right now we're just talking about normal wires coming in from the telephone line,", 'start': 1129.705, 'duration': 6.045}, {'end': 1140.213, 'text': "but this is the exact same case whether you're using T1 or voice over IP trunks.", 'start': 1135.75, 'duration': 4.463}, {'end': 1143.016, 'text': 'This is the basic concept of how it works.', 'start': 1140.273, 'duration': 2.743}, {'end': 1152.606, 'text': "So we've talked about the public switched telephone network, the PSTN.", 'start': 1149.144, 'duration': 3.462}, {'end': 1154.026, 'text': "We've talked about the central offices.", 'start': 1152.626, 'duration': 1.4}, {'end': 1157.448, 'text': "Now we've talked about the trunk lines that come all the way to your building.", 'start': 1154.546, 'duration': 2.902}, {'end': 1164.051, 'text': "Now once these trunk lines get to your building, they're going to hit something called the PBX.", 'start': 1157.848, 'duration': 6.203}, {'end': 1170.132, 'text': 'The PBX is for all intents and purposes the telephone server.', 'start': 1165.231, 'duration': 4.901}], 'summary': 'Explaining telephone infrastructure components and pbx function.', 'duration': 40.427, 'max_score': 1129.705, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU1129705.jpg'}], 'start': 370.634, 'title': 'Telephone network basics and trunk lines', 'summary': 'Explains the basics of public switch telephone network (pstn) and the role of central offices, trunk lines, and d-mark points. it also delves into understanding trunk lines, hunt groups, and pbx, emphasizing their importance in managing simultaneous calls and call forwarding.', 'chapters': [{'end': 756.114, 'start': 370.634, 'title': 'Telephone network basics', 'summary': 'Explains the basics of the public switch telephone network (pstn) including the role of central offices, trunk lines, and d-mark points, highlighting the significance of trunk lines in determining the number of simultaneous calls and the unique phone numbers assigned to each trunk line.', 'duration': 385.48, 'highlights': ['The PSTN is a public switch telephone network connecting all telephone systems through central offices, with the significance of trunk lines in determining simultaneous calls. The PSTN is a network connecting all telephone systems through central offices, with trunk lines determining the number of simultaneous calls.', "The role of D-mark points is explained, detailing the responsibility of the telephone company up to the D-mark point and the user's responsibility beyond it. The D-mark point signifies the responsibility division, with the telephone company responsible up to the point and the user responsible beyond it.", 'Explanation of trunk lines and their significance in determining the number of simultaneous calls, with an example of having four trunk lines for a 30-40 person office. Trunk lines determine the number of simultaneous calls, with the example of having four trunk lines for a 30-40 person office.', 'Detailing the unique phone numbers assigned to each trunk line, with an example of four trunk lines having distinct phone numbers. Each trunk line is assigned a unique phone number, illustrated by the example of four trunk lines having distinct phone numbers.']}, {'end': 1232.778, 'start': 756.114, 'title': 'Understanding trunk lines and hunt groups', 'summary': 'Explains the concept of trunk lines, hunt groups, and pbx in managing incoming and outgoing calls, emphasizing the importance of trunk lines in determining the number of simultaneous calls and setting up hunt groups for call forwarding.', 'duration': 476.664, 'highlights': ['Trunk lines determine the number of simultaneous calls; recommended ratio is 1 trunk line for every 10 calls. If you have 40 people, I would suggest you have four trunk lines. If you have 10 people, maybe you can have three trunk lines.', 'Hunt groups automatically forward calls to next number in the list if the initial number is busy. A hunt group was created to automatically forward calls if any of the designated phone numbers were busy.', 'PBX routes incoming and outgoing calls and allows setting up out-calling groups with specific rules. The PBX routes calls within the system, sets up rules for outgoing calls, and allows the creation of call groups and hunt groups.']}], 'duration': 862.144, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU370634.jpg', 'highlights': ['The PSTN is a public switch telephone network connecting all telephone systems through central offices, with the significance of trunk lines in determining simultaneous calls.', "The role of D-mark points is explained, detailing the responsibility of the telephone company up to the D-mark point and the user's responsibility beyond it.", 'Explanation of trunk lines and their significance in determining the number of simultaneous calls, with an example of having four trunk lines for a 30-40 person office.', 'Trunk lines determine the number of simultaneous calls; recommended ratio is 1 trunk line for every 10 calls.', 'Hunt groups automatically forward calls to next number in the list if the initial number is busy.', 'PBX routes incoming and outgoing calls and allows setting up out-calling groups with specific rules.']}, {'end': 1727.146, 'segs': [{'end': 1278.451, 'src': 'embed', 'start': 1252.013, 'weight': 0, 'content': [{'end': 1260.379, 'text': 'if a call comes in from the outside world to your building, the PBX is the one to route it to you or to your boss,', 'start': 1252.013, 'duration': 8.366}, {'end': 1262.421, 'text': 'or to a voicemail system or to wherever.', 'start': 1260.379, 'duration': 2.042}, {'end': 1265.002, 'text': 'Basically, the PBX is what routes all the calls.', 'start': 1262.501, 'duration': 2.501}, {'end': 1271.827, 'text': "Now, PBXs are, like I say, we'll get into a class on them, are really not that hard to administer.", 'start': 1265.603, 'duration': 6.224}, {'end': 1278.451, 'text': "If you understand a few concepts and you understand what you're supposed to be doing, PBXs aren't that hard to administer.", 'start': 1271.847, 'duration': 6.604}], 'summary': 'Pbxs route all incoming calls to designated recipients, voicemail, or elsewhere; they are not hard to administer.', 'duration': 26.438, 'max_score': 1252.013, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU1252013.jpg'}, {'end': 1331.315, 'src': 'embed', 'start': 1303.007, 'weight': 3, 'content': [{'end': 1308.17, 'text': 'The voicemail system is actually an add-on to the PBX.', 'start': 1303.007, 'duration': 5.163}, {'end': 1311.473, 'text': "So, you know, you'll buy a Viya.", 'start': 1308.291, 'duration': 3.182}, {'end': 1321.984, 'text': 'whatever they are, PBX for $600, and then you have to buy a voicemail system that connects to that PBX for another $500 or $600.', 'start': 1312.413, 'duration': 9.571}, {'end': 1328.792, 'text': 'And so all of the voicemail stuff is controlled by the voicemail system.', 'start': 1321.984, 'duration': 6.808}, {'end': 1331.315, 'text': 'Like I say, with Avaya, this is called Audix.', 'start': 1328.872, 'duration': 2.443}], 'summary': 'The voicemail system, audix, is an add-on to the pbx, costing $500 or $600.', 'duration': 28.308, 'max_score': 1303.007, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU1303007.jpg'}, {'end': 1490.266, 'src': 'embed', 'start': 1460.626, 'weight': 4, 'content': [{'end': 1469.052, 'text': "So basically, you have to point this auto attendant that's sitting in the PBX to a voicemail box sitting in the voicemail system.", 'start': 1460.626, 'duration': 8.426}, {'end': 1477.137, 'text': "Again, when we go into call routing, as we get more into all of this, this will make more sense once we're actually doing it.", 'start': 1469.472, 'duration': 7.665}, {'end': 1480.8, 'text': 'But the main thing to realize, which can be a real pain in the butt,', 'start': 1477.537, 'duration': 3.263}, {'end': 1490.266, 'text': "is a lot of the normal functions that you think about with a telephone system are actually split between what's called the PBX and between the voicemail system.", 'start': 1480.8, 'duration': 9.466}], 'summary': 'Point the auto attendant in pbx to voicemail box in voicemail system.', 'duration': 29.64, 'max_score': 1460.626, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU1460626.jpg'}, {'end': 1623.913, 'src': 'heatmap', 'start': 1587.572, 'weight': 0.872, 'content': [{'end': 1589.174, 'text': 'So these are two different critters.', 'start': 1587.572, 'duration': 1.602}, {'end': 1594.12, 'text': 'I say as we go along, and this will all make a lot more sense, but this is the basic telephone system.', 'start': 1589.775, 'duration': 4.345}, {'end': 1601.85, 'text': "So let's talk about stations.", 'start': 1600.147, 'duration': 1.703}, {'end': 1610.521, 'text': 'Now what are stations, you may ask? Stations are what you may think of as telephones.', 'start': 1605.236, 'duration': 5.285}, {'end': 1618.528, 'text': 'But just like the computer world, where they come up with a whole bunch of new lingo to explain what you thought you always understood,', 'start': 1611.682, 'duration': 6.846}, {'end': 1620.19, 'text': 'telephones are no longer telephones.', 'start': 1618.528, 'duration': 1.662}, {'end': 1623.913, 'text': 'In the telephone world, telephones are stations.', 'start': 1620.37, 'duration': 3.543}], 'summary': 'Telephones and stations are different in the telephone system.', 'duration': 36.341, 'max_score': 1587.572, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU1587572.jpg'}, {'end': 1704.438, 'src': 'embed', 'start': 1680.22, 'weight': 2, 'content': [{'end': 1687.459, 'text': "So when you're dealing in the telephone world, Telephones aren't really always telephones.", 'start': 1680.22, 'duration': 7.239}, {'end': 1689.101, 'text': 'Telephones are stations.', 'start': 1687.659, 'duration': 1.442}, {'end': 1692.546, 'text': "So stations can be the telephone that you're used to.", 'start': 1689.322, 'duration': 3.224}, {'end': 1694.649, 'text': 'It can be some kind of intercom system.', 'start': 1692.906, 'duration': 1.743}, {'end': 1696.952, 'text': 'It can be that call box up front.', 'start': 1695.009, 'duration': 1.943}, {'end': 1704.438, 'text': 'All of these things will connect back to a PBX and calls will be routed accordingly.', 'start': 1697.532, 'duration': 6.906}], 'summary': "Telephones in the telephone world are not just what you're used to; they can also be stations, intercom systems, or call boxes, all connecting to a pbx for call routing.", 'duration': 24.218, 'max_score': 1680.22, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU1680220.jpg'}], 'start': 1233.178, 'title': 'Pbx and voicemail systems in telephone systems', 'summary': "Covers the roles and importance of pbx in call routing, along with the separate nature of voicemail systems as add-ons to pbx, including avaya's audix. it also discusses the basics of a telephone system, emphasizing the division of functionalities between pbx and voicemail.", 'chapters': [{'end': 1331.315, 'start': 1233.178, 'title': 'Understanding pbx and voicemail systems', 'summary': "Explains the role of pbx as the central routing system for calls within and outside the organization, highlighting its importance in call routing and the separate nature of voicemail systems as add-ons to pbx, such as avaya's audix.", 'duration': 98.137, 'highlights': ['The PBX acts as the central routing system for calls within and outside the organization, playing a crucial role in directing calls to extensions, voicemail systems, or the outside world.', 'PBXs are relatively easy to administer with a good understanding of the concepts involved, making them manageable for system administrators.', "Voicemail systems are separate from PBX and are added on as an extra component, such as Avaya's Audix, which requires additional investment of around $500 to $600."]}, {'end': 1727.146, 'start': 1332.256, 'title': 'Telephone system basics', 'summary': 'Discusses the basics of a telephone system, including the roles of pbx and voicemail systems, the setup of auto attendant, and the definition of stations, emphasizing the division of functionalities between pbx and voicemail.', 'duration': 394.89, 'highlights': ['The PBX routes all calls and the voicemail system handles all voice-related tasks. The PBX is responsible for routing all calls within the telephone system, while the voicemail system manages all voice-related tasks.', 'Auto attendant setup involves programming the routing in the PBX and linking it to the voicemail message. Setting up an auto attendant includes programming the call routing in the PBX and associating it with the voicemail message, which resides in the voicemail system.', 'Stations in a telephone system can include telephones, intercom systems, and call boxes, all connected to the PBX for call routing. Stations in a telephone system encompass various devices such as telephones, intercom systems, and call boxes, all of which are interconnected to the PBX for call routing purposes.']}], 'duration': 493.968, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU1233178.jpg', 'highlights': ['The PBX acts as the central routing system for calls within and outside the organization, playing a crucial role in directing calls to extensions, voicemail systems, or the outside world.', 'The PBX routes all calls within the telephone system, while the voicemail system manages all voice-related tasks.', 'Stations in a telephone system encompass various devices such as telephones, intercom systems, and call boxes, all of which are interconnected to the PBX for call routing purposes.', "Voicemail systems are separate from PBX and are added on as an extra component, such as Avaya's Audix, which requires additional investment of around $500 to $600.", 'Auto attendant setup involves programming the routing in the PBX and linking it to the voicemail message.']}, {'end': 2104.896, 'segs': [{'end': 1777.908, 'src': 'embed', 'start': 1754.231, 'weight': 2, 'content': [{'end': 1766.519, 'text': 'now how these telephones and these call boxes and all that communicate back with the PBX is something important to understand.', 'start': 1754.231, 'duration': 12.288}, {'end': 1770.442, 'text': 'So you have your PBX right here, and then you have your telephone.', 'start': 1766.539, 'duration': 3.903}, {'end': 1775.386, 'text': "Now, in a normal like I, say we're not talking about voice over IP here.", 'start': 1771.603, 'duration': 3.783}, {'end': 1777.908, 'text': "get all that crap out of your head because we're not talking about that right now.", 'start': 1775.386, 'duration': 2.522}], 'summary': 'Understanding communication between telephones and call boxes with the pbx is important.', 'duration': 23.677, 'max_score': 1754.231, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU1754231.jpg'}, {'end': 1911.409, 'src': 'embed', 'start': 1864.456, 'weight': 1, 'content': [{'end': 1872.72, 'text': 'So whether the person is sitting in an office three doors down or whether the person is sitting in Japan.', 'start': 1864.456, 'duration': 8.264}, {'end': 1882.537, 'text': 'If that is an analog telephone call, your actual sound waves are getting transmitted all the way over to Japan.', 'start': 1873.4, 'duration': 9.137}, {'end': 1888.574, 'text': 'The problem is is, since your actual sound waves are getting transported all the way to Japan,', 'start': 1883.871, 'duration': 4.703}, {'end': 1897.74, 'text': "if there's any static or if there is any interference on the line, that interference gets put onto that analog line.", 'start': 1888.574, 'duration': 9.166}, {'end': 1901.482, 'text': "So, basically, if you're talking over a long distance and there's a thunderstorm,", 'start': 1897.84, 'duration': 3.642}, {'end': 1906.486, 'text': 'that thunderstorm can create interference and it makes static and the rest of that.', 'start': 1901.482, 'duration': 5.004}, {'end': 1911.409, 'text': 'So what they did is they came up with digital communication.', 'start': 1907.066, 'duration': 4.343}], 'summary': 'Analog calls can suffer interference over long distances, leading to static; digital communication was developed to address this issue.', 'duration': 46.953, 'max_score': 1864.456, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU1864456.jpg'}, {'end': 1993.781, 'src': 'embed', 'start': 1961.491, 'weight': 3, 'content': [{'end': 1965.174, 'text': 'Now the problem was, in order to have those features,', 'start': 1961.491, 'duration': 3.683}, {'end': 1971.958, 'text': "they couldn't use the old analog telephone handsets because they were not capable of giving the features.", 'start': 1965.174, 'duration': 6.784}, {'end': 1978.883, 'text': 'So they started selling digital telephones for digital telephone systems.', 'start': 1972.459, 'duration': 6.424}, {'end': 1985.811, 'text': 'so this is where the telephone communicates with the pbx, using ones and zeros.', 'start': 1978.883, 'duration': 6.928}, {'end': 1987.133, 'text': "so it's a digital call.", 'start': 1985.811, 'duration': 1.322}, {'end': 1993.781, 'text': "but as we'll go into in other classes, this gives a lot more functionality to this telephone.", 'start': 1987.133, 'duration': 6.648}], 'summary': 'Digital telephones were sold for digital systems to enable more features and functionality.', 'duration': 32.29, 'max_score': 1961.491, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU1961491.jpg'}, {'end': 2063.386, 'src': 'embed', 'start': 2014.469, 'weight': 0, 'content': [{'end': 2021.091, 'text': "You're not going to get anything because that analog phone does not understand how to talk to a digital telephone system.", 'start': 2014.469, 'duration': 6.622}, {'end': 2026.092, 'text': 'If you have a digital phone and you have an analog telephone system again,', 'start': 2021.691, 'duration': 4.401}, {'end': 2032.578, 'text': 'the phone is not going to work because the digital phone does not understand the analog system.', 'start': 2027.232, 'duration': 5.346}, {'end': 2033.999, 'text': 'So this is important.', 'start': 2032.618, 'duration': 1.381}, {'end': 2047.072, 'text': "When you're buying new or newish PBXs, they will normally have both analog and digital ports because, like if you buy a fax machine,", 'start': 2034.6, 'duration': 12.472}, {'end': 2049.014, 'text': 'most fax machines are analog.', 'start': 2047.072, 'duration': 1.942}, {'end': 2055.619, 'text': "So if you try to plug that fax machine into the digital port on the PBX, it's not going to work.", 'start': 2049.154, 'duration': 6.465}, {'end': 2063.386, 'text': 'So what happens on most of these PBXs, on the back of it or on the front of it, it looks almost like a switch.', 'start': 2056.1, 'duration': 7.286}], 'summary': 'Analog and digital phones need compatible systems for operation, with pbxs usually having both types of ports.', 'duration': 48.917, 'max_score': 2014.469, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU2014469.jpg'}], 'start': 1728.826, 'title': 'Telephone systems and communication', 'summary': 'Discusses the communication process in telephone systems, emphasizing the distinction between analog and digital communication, transmission of sound waves, and the importance of understanding communication methods within pbx systems. it also explains the transition from analog to digital communication, highlighting the impact of interference, evolution of telephone handsets, and compatibility of analog and digital devices with pbxs.', 'chapters': [{'end': 1888.574, 'start': 1728.826, 'title': 'Telephone systems and communication', 'summary': 'Discusses the communication process in telephone systems, emphasizing the distinction between analog and digital communication and the transmission of sound waves, highlighting the importance of understanding the communication methods within pbx systems.', 'duration': 159.748, 'highlights': ['An analog telephone line or a digital telephone line are the two ways to transmit communication in a normal telephone system, with the distinction being very important.', 'The transmission of sound waves in analog telephone systems involves the actual voice being carried all the way to the recipient, whether they are nearby or in a distant location like Japan.', 'Understanding how telephones, call boxes, and intercom systems communicate with PBX systems is crucial, as PBX systems deal with more than just telephones, encompassing intercom systems and call boxes.']}, {'end': 2104.896, 'start': 1888.574, 'title': 'Analog vs digital communication', 'summary': 'Explains the transition from analog to digital communication in telephone systems, highlighting the impact of interference, the evolution of telephone handsets, and the compatibility of analog and digital devices with pbxs.', 'duration': 216.322, 'highlights': ['Digital communication turns voice into ones and zeros, providing more functionality and features to telephone systems. The transition to digital communication allowed more functionality and features to be offered by telephone systems, as it turned voice into ones and zeros, enabling a digital call and enhancing the capabilities of the telephone.', 'Analog and digital devices are incompatible with PBXs, necessitating the presence of both analog and digital ports in new PBXs to accommodate different devices. The incompatibility between analog and digital devices with PBXs requires the presence of both analog and digital ports in new PBXs to support various devices like analog fax machines and digital phones, ensuring compatibility and functionality.', 'Interference on analog lines can impact communication, leading to the introduction of digital communication to mitigate such issues. The interference on analog lines during events like thunderstorms can affect communication, leading to the development of digital communication to overcome such interference and improve the quality of communication.']}], 'duration': 376.07, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU1728826.jpg', 'highlights': ['Understanding the distinction between analog and digital telephone lines is crucial for communication in telephone systems.', 'The transmission of sound waves in analog telephone systems involves carrying the voice to the recipient, regardless of the distance.', 'Understanding how telephones, call boxes, and intercom systems communicate with PBX systems is essential for comprehensive PBX understanding.', 'The transition to digital communication allowed more functionality and features to be offered by telephone systems.', 'The incompatibility between analog and digital devices with PBXs requires the presence of both analog and digital ports in new PBXs.', 'Interference on analog lines can impact communication, leading to the introduction of digital communication to mitigate such issues.']}, {'end': 2553.045, 'segs': [{'end': 2156.56, 'src': 'embed', 'start': 2128.721, 'weight': 3, 'content': [{'end': 2131.844, 'text': 'When you get into the telephone world, telephones are no longer telephones.', 'start': 2128.721, 'duration': 3.123}, {'end': 2133.285, 'text': 'Telephones are stations.', 'start': 2131.904, 'duration': 1.381}, {'end': 2136.007, 'text': 'So there are a lot of things that stations can do.', 'start': 2133.645, 'duration': 2.362}, {'end': 2137.388, 'text': 'Stations can be telephones.', 'start': 2136.167, 'duration': 1.221}, {'end': 2138.889, 'text': 'Stations can be intercom systems.', 'start': 2137.468, 'duration': 1.421}, {'end': 2140.51, 'text': 'Stations can be call boxes.', 'start': 2138.929, 'duration': 1.581}, {'end': 2141.891, 'text': 'All of those are stations.', 'start': 2140.81, 'duration': 1.081}, {'end': 2146.275, 'text': 'All of those connect back to the PBX at some point.', 'start': 2142.392, 'duration': 3.883}, {'end': 2153.239, 'text': "Then, when you're dealing with the PBX, remember, most PBXs, they're either going to be digital or analog.", 'start': 2146.875, 'duration': 6.364}, {'end': 2156.56, 'text': 'Some of them have both digital and analog ports.', 'start': 2153.779, 'duration': 2.781}], 'summary': 'Telephone world: stations include telephones, intercoms, call boxes; connect to pbx, which can be digital or analog.', 'duration': 27.839, 'max_score': 2128.721, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU2128721.jpg'}, {'end': 2227.08, 'src': 'heatmap', 'start': 2168.347, 'weight': 2, 'content': [{'end': 2172.511, 'text': "If you have a digital phone and you plug into an analog port, it's not going to work.", 'start': 2168.347, 'duration': 4.164}, {'end': 2175.675, 'text': 'So digital devices have to get plugged into digital ports.', 'start': 2172.632, 'duration': 3.043}, {'end': 2178.798, 'text': 'Analog devices have to get plugged into analog ports.', 'start': 2176.355, 'duration': 2.443}, {'end': 2180.259, 'text': 'Remember all that.', 'start': 2179.398, 'duration': 0.861}, {'end': 2181.921, 'text': "It's pretty simple.", 'start': 2181.06, 'duration': 0.861}, {'end': 2193.783, 'text': 'So as we talked about, the telephone system has both the PBX and the voicemail system.', 'start': 2187.918, 'duration': 5.865}, {'end': 2201.87, 'text': "Although they may be connected together, although they may even be in one box, engineering-wise, they're still two separate things.", 'start': 2194.023, 'duration': 7.847}, {'end': 2208.115, 'text': "So when you're talking about the PBX and you're talking about telephones, you're talking about the PBX and stations.", 'start': 2202.391, 'duration': 5.724}, {'end': 2215.382, 'text': "When you're talking about voicemail, you're not talking about people or users, you're talking about subscribers.", 'start': 2208.516, 'duration': 6.866}, {'end': 2227.08, 'text': 'so whenever you are talking about users of a voicemail system, you are talking about subscribers to that voicemail system.', 'start': 2217.293, 'duration': 9.787}], 'summary': 'Digital devices need digital ports; analog devices need analog ports. pbx and voicemail systems are separate entities with distinct users.', 'duration': 58.733, 'max_score': 2168.347, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU2168347.jpg'}, {'end': 2339.499, 'src': 'embed', 'start': 2309.193, 'weight': 5, 'content': [{'end': 2315.336, 'text': 'So whenever you call in to get that person, it automatically routes to their voicemail box.', 'start': 2309.193, 'duration': 6.143}, {'end': 2317.257, 'text': "So that's a big thing to understand.", 'start': 2315.636, 'duration': 1.621}, {'end': 2325.781, 'text': 'with voicemail systems is subscribers may have a station attached to them, may have a telephone associated with them,', 'start': 2317.257, 'duration': 8.524}, {'end': 2329.183, 'text': "but they don't have to have a telephone associated with them.", 'start': 2325.781, 'duration': 3.402}, {'end': 2339.499, 'text': "So like I say, if you're dealing with a company that has a lot of field people, you may just have 50 mailboxes, voicemail boxes, without telephones.", 'start': 2329.463, 'duration': 10.036}], 'summary': 'Voicemail system allows for 50 mailboxes without telephones.', 'duration': 30.306, 'max_score': 2309.193, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU2309193.jpg'}, {'end': 2380.548, 'src': 'embed', 'start': 2353.213, 'weight': 1, 'content': [{'end': 2356.656, 'text': 'So, you know, you can put on, you can say what the directions are to your facility.', 'start': 2353.213, 'duration': 3.443}, {'end': 2358.017, 'text': 'You can say what your hours are.', 'start': 2356.676, 'duration': 1.341}, {'end': 2359.999, 'text': 'You can say tax ID number, et cetera.', 'start': 2358.037, 'duration': 1.962}, {'end': 2367.584, 'text': 'And then the voicemail box is also where you put all the voice instructions for something called the auto attendant.', 'start': 2360.359, 'duration': 7.225}, {'end': 2369.724, 'text': 'So the auto attendant is what routes your calls.', 'start': 2367.604, 'duration': 2.12}, {'end': 2376.326, 'text': 'Like I say when you call in to business and it says thank you for calling Eli the Computer Guy for sales press one,', 'start': 2369.744, 'duration': 6.582}, {'end': 2380.548, 'text': 'that message is all residing in the voicemail system.', 'start': 2376.326, 'duration': 4.222}], 'summary': 'The voicemail system holds facility directions, hours, tax id, and auto attendant instructions for call routing.', 'duration': 27.335, 'max_score': 2353.213, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU2353213.jpg'}, {'end': 2450.935, 'src': 'embed', 'start': 2421.678, 'weight': 0, 'content': [{'end': 2427.341, 'text': 'When you buy the voicemail, you also buy a certain number of ports.', 'start': 2421.678, 'duration': 5.663}, {'end': 2434.605, 'text': 'Ports are the number of people that can be using the voicemail system at any one time.', 'start': 2427.821, 'duration': 6.784}, {'end': 2442.97, 'text': 'So if you have 50, subscribers and stations and you only have two ports,', 'start': 2434.665, 'duration': 8.305}, {'end': 2450.935, 'text': 'that means only two people will be allowed to access the voicemail system at any one time, no matter how many trunk lines you have coming in.', 'start': 2442.97, 'duration': 7.965}], 'summary': 'Voicemail purchase includes a limited number of ports, e.g. 2 for 50 users, restricting simultaneous access', 'duration': 29.257, 'max_score': 2421.678, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU2421678.jpg'}, {'end': 2521.686, 'src': 'embed', 'start': 2494.726, 'weight': 4, 'content': [{'end': 2499.209, 'text': "you may be getting all these complaints because when people are calling in, they're not getting the auto attendant.", 'start': 2494.726, 'duration': 4.483}, {'end': 2503.393, 'text': "it's not because there's any configuration problem, it's because you have not bought enough ports.", 'start': 2499.209, 'duration': 4.184}, {'end': 2511.98, 'text': 'so with the voicemail system, the number of ports you buy are the number of people that can be interacting with the voicemail system at any one time.', 'start': 2503.393, 'duration': 8.587}, {'end': 2516.223, 'text': "once you go over that number of ports, you don't get anything generally.", 'start': 2511.98, 'duration': 4.243}, {'end': 2521.686, 'text': 'So like I say, in the voicemail world, users of the voicemail system are called subscribers.', 'start': 2516.683, 'duration': 5.003}], 'summary': 'Insufficient ports causing customer complaints, need more for better service.', 'duration': 26.96, 'max_score': 2494.726, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU2494726.jpg'}], 'start': 2105.296, 'title': 'Telecommunication and voicemail systems', 'summary': 'Emphasizes the importance of correctly plugging devices into telephone systems, explains the distinction between pbxs, stations, and voicemail systems, and highlights the functionality of voicemail systems, the concept of subscribers, and the significance of purchasing the right number of ports.', 'chapters': [{'end': 2215.382, 'start': 2105.296, 'title': 'Understanding telecommunication systems', 'summary': 'Explains the importance of correctly plugging devices into digital or analog ports within a telephone system, emphasizing the distinction between pbxs, stations, and voicemail systems.', 'duration': 110.086, 'highlights': ['The importance of plugging devices into the correct ports within a telephone system is emphasized, with the repercussions of plugging digital devices into analog ports or vice versa highlighted. Emphasizes the need to plug devices correctly into digital or analog ports within a telephone system.', 'The distinction between PBXs, stations, and voicemail systems is emphasized, highlighting their separate functionalities and components within the overall telecommunication system. Emphasizes the distinction between PBXs, stations, and voicemail systems within the telecommunication system.', 'The concept of telephones transforming into stations, capable of various functions such as intercom systems and call boxes, is explained, emphasizing the expanded capabilities of stations within the telecommunication system. Explains the concept of telephones transforming into stations with expanded capabilities within the telecommunication system.']}, {'end': 2553.045, 'start': 2217.293, 'title': 'Understanding voicemail systems', 'summary': 'Explains the functionality of voicemail systems, emphasizing the concept of subscribers, the features provided, and the significance of purchasing the right number of ports to avoid access limitations.', 'duration': 335.752, 'highlights': ["Subscribers of voicemail systems don't always have to be attached to stations, allowing for voicemail boxes without telephones. Subscribers of voicemail systems may not be associated with telephones, enabling the creation of voicemail boxes without stations. This flexibility is particularly useful for field personnel or salespeople without desks, ensuring that calls are automatically routed to their voicemail boxes.", 'The number of ports purchased for the voicemail system determines the maximum number of people who can interact with the system at any given time. The purchase of ports for the voicemail system directly impacts the number of users who can engage with it simultaneously. Insufficient ports can lead to access limitations, causing callers to be unable to interact with the system or access features.', 'The voicemail system provides voice instructions for the auto attendant and message services, such as providing directions, hours of operation, and other relevant information. The voicemail system plays a crucial role in delivering voice instructions for the auto attendant and message services, offering information about the business, including directions, operating hours, and other essential details. This enhances the functionality and user experience of the system.']}], 'duration': 447.749, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU2105296.jpg', 'highlights': ['The purchase of ports for the voicemail system directly impacts the number of users who can engage with it simultaneously.', 'The voicemail system plays a crucial role in delivering voice instructions for the auto attendant and message services, offering information about the business.', 'Emphasizes the importance of correctly plugging devices into digital or analog ports within a telephone system.', 'Explains the concept of telephones transforming into stations with expanded capabilities within the telecommunication system.', 'Insufficient ports can lead to access limitations, causing callers to be unable to interact with the system or access features.', 'Subscribers of voicemail systems may not be associated with telephones, enabling the creation of voicemail boxes without stations.']}, {'end': 3236.261, 'segs': [{'end': 2606.714, 'src': 'embed', 'start': 2576.68, 'weight': 0, 'content': [{'end': 2581.503, 'text': "They're very easy to administer, but the main thing is you have to understand what you're doing.", 'start': 2576.68, 'duration': 4.823}, {'end': 2583.525, 'text': 'You have to understand all of these concepts.', 'start': 2581.523, 'duration': 2.002}, {'end': 2586.186, 'text': "Once you understand the concepts, it's very easy.", 'start': 2584.405, 'duration': 1.781}, {'end': 2590.388, 'text': "If you don't understand the concepts, it's all just gobbledygook, probably like everything else is.", 'start': 2586.546, 'duration': 3.842}, {'end': 2593.309, 'text': 'We talked about the outside world.', 'start': 2591.128, 'duration': 2.181}, {'end': 2597.57, 'text': 'So we talked about how calls actually get to your building.', 'start': 2593.329, 'duration': 4.241}, {'end': 2606.714, 'text': 'So we talked about the North American Dialing Plan, which is basically like the routing protocol for the Public Switched Telephone Network, the PSTN.', 'start': 2597.911, 'duration': 8.803}], 'summary': 'Understanding concepts is key to administering calls and the north american dialing plan.', 'duration': 30.034, 'max_score': 2576.68, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU2576680.jpg'}, {'end': 2666.724, 'src': 'embed', 'start': 2640.792, 'weight': 4, 'content': [{'end': 2646.398, 'text': 'So I say at your house, your telephone line literally runs all the way back to the central office.', 'start': 2640.792, 'duration': 5.606}, {'end': 2650.942, 'text': "Now, the main thing, as I said, is there's the DMARC point on your building.", 'start': 2646.758, 'duration': 4.184}, {'end': 2656.408, 'text': "This DMARC point, like I say, with Verizon, it's a little gray box that's normally screwed to the outside of the building.", 'start': 2651.243, 'duration': 5.165}, {'end': 2660.792, 'text': 'And the telephone company is responsible for everything up to that gray box.', 'start': 2656.888, 'duration': 3.904}, {'end': 2666.724, 'text': 'On the other side of the gray box, on the other side inside your building, you are responsible for everything.', 'start': 2662.02, 'duration': 4.704}], 'summary': "Telephone line runs to central office, dmarc point at building, verizon's responsibility up to dmarc point.", 'duration': 25.932, 'max_score': 2640.792, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU2640792.jpg'}, {'end': 2712.85, 'src': 'embed', 'start': 2686.48, 'weight': 3, 'content': [{'end': 2691.546, 'text': "which simulates a telephone, which is a lot like a telephone, but it's not a telephone.", 'start': 2686.48, 'duration': 5.066}, {'end': 2693.189, 'text': 'Telephones are telephones.', 'start': 2691.687, 'duration': 1.502}, {'end': 2698.215, 'text': 'VoIP, or voice over IP, is audio communications over data networks.', 'start': 2693.849, 'duration': 4.366}, {'end': 2699.677, 'text': 'They are two different critters.', 'start': 2698.515, 'duration': 1.162}, {'end': 2702.54, 'text': 'We will have a class on voice over IP so you understand that better.', 'start': 2699.697, 'duration': 2.843}, {'end': 2705.483, 'text': 'We talked about the trunk lines.', 'start': 2704.082, 'duration': 1.401}, {'end': 2712.85, 'text': 'So the trunk lines, however many trunk lines you have, are how many concurrent communications you can have with the outside world.', 'start': 2705.644, 'duration': 7.206}], 'summary': 'Voip allows audio communication over data networks. trunk lines determine concurrent communications.', 'duration': 26.37, 'max_score': 2686.48, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU2686480.jpg'}, {'end': 2828.755, 'src': 'embed', 'start': 2786.244, 'weight': 5, 'content': [{'end': 2789.425, 'text': 'And if that was busy, it was automatically forwarded to the fourth number on the list.', 'start': 2786.244, 'duration': 3.181}, {'end': 2791.987, 'text': 'So this is how incoming calls happen.', 'start': 2789.785, 'duration': 2.202}, {'end': 2798.53, 'text': 'So whether you have two trunk lines or whether you have a hundred trunk lines, all you do is you create this hunt group.', 'start': 2792.007, 'duration': 6.523}, {'end': 2800.151, 'text': 'So if this is busy, go to this.', 'start': 2798.83, 'duration': 1.321}, {'end': 2801.232, 'text': 'If this is busy, go to this.', 'start': 2800.351, 'duration': 0.881}, {'end': 2802.192, 'text': 'If this is busy, go to this.', 'start': 2801.312, 'duration': 0.88}, {'end': 2804.113, 'text': "Etc It's very easy.", 'start': 2803.233, 'duration': 0.88}, {'end': 2809.818, 'text': "Now, that's on the central office, the telephone person side, so incoming calls.", 'start': 2804.733, 'duration': 5.085}, {'end': 2813.862, 'text': 'Outgoing calls, all of that is controlled by your PBX.', 'start': 2810.559, 'duration': 3.303}, {'end': 2818.486, 'text': 'And like I say, we will talk more about programming PBXs and call routing later.', 'start': 2813.902, 'duration': 4.584}, {'end': 2821.989, 'text': "But basically, when you're calling out, you can also create rules.", 'start': 2818.947, 'duration': 3.042}, {'end': 2827.695, 'text': 'You can create rules about what stations can use the long distance telephone number.', 'start': 2822.009, 'duration': 5.686}, {'end': 2828.755, 'text': 'That kind of stuff.', 'start': 2828.055, 'duration': 0.7}], 'summary': 'Incoming calls are automatically forwarded to the next available line in the hunt group, simplifying call handling for any number of trunk lines. outgoing calls and call routing are controlled by the pbx system, with the ability to create rules for long distance calls and station usage.', 'duration': 42.511, 'max_score': 2786.244, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU2786244.jpg'}, {'end': 2949.14, 'src': 'embed', 'start': 2913.045, 'weight': 7, 'content': [{'end': 2918.609, 'text': 'So when you have your PBX, it will either be an analog PBX or a digital PBX or a mix of both.', 'start': 2913.045, 'duration': 5.564}, {'end': 2924.293, 'text': 'So a lot of times now you will have digital lines on the PBX and analog lines on the PBX.', 'start': 2918.649, 'duration': 5.644}, {'end': 2931.516, 'text': 'Analog phones or analog stations can only communicate through an analog port.', 'start': 2925.234, 'duration': 6.282}, {'end': 2935.817, 'text': 'Digital stations can only communicate through a digital port.', 'start': 2932.096, 'duration': 3.721}, {'end': 2949.14, 'text': 'So if you take your phone from home into the office and you plug it straight into that PBX if that is a digital PBX your phone from home will not work because your phone from home is an analog phone.', 'start': 2935.877, 'duration': 13.263}], 'summary': 'Pbx can have analog, digital, or mixed lines; analog phones need analog ports, and digital phones need digital ports.', 'duration': 36.095, 'max_score': 2913.045, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU2913045.jpg'}, {'end': 3236.261, 'src': 'embed', 'start': 3221.847, 'weight': 2, 'content': [{'end': 3225.631, 'text': 'This is just the basic components of what telephone systems are made up of.', 'start': 3221.847, 'duration': 3.784}, {'end': 3232.217, 'text': 'Now that you understand this, we can go off to call routing, and we can go off to voice over IP, and we can go off to a lot of the cool stuff.', 'start': 3226.231, 'duration': 5.986}, {'end': 3236.261, 'text': 'So as always, it was really good teaching this class, and I look forward to seeing you in the next one.', 'start': 3233.138, 'duration': 3.123}], 'summary': 'Telephone systems consist of basic components. next: call routing, voice over ip, and more. good teaching, looking forward to the next class.', 'duration': 14.414, 'max_score': 3221.847, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU3221847.jpg'}], 'start': 2553.966, 'title': 'Basics of telephone systems', 'summary': 'Provides an overview of telephone systems, covering the north american dialing plan, pstn, trunk lines, and administration. it emphasizes understanding differences between telephones and voip, and cautions against administering lower end systems through the telephone.', 'chapters': [{'end': 2597.57, 'start': 2553.966, 'title': 'Introduction to telephone systems', 'summary': 'Discusses an overview of telephone systems, emphasizing the importance of understanding the concepts for easy administration, and mentions the ease of administering telephone systems compared to servers and networks.', 'duration': 43.604, 'highlights': ['Understanding the concepts of telephone systems is crucial for easy administration.', 'Telephone systems are relatively easy to administer in comparison to servers and networks.', 'The chapter discusses an overview of telephone systems and the process of calls reaching a building.']}, {'end': 3236.261, 'start': 2597.911, 'title': 'Introduction to telephone systems', 'summary': 'Explained the north american dialing plan, the functioning of the public switched telephone network (pstn), the concept of trunk lines, and the administration of telephone systems, emphasizing the importance of understanding the differences between telephones and voice over ip (voip). it also highlighted the significance of dmarc points, hunt groups for incoming calls, the role of pbx in call routing, and the distinction between analog and digital stations. the class concluded with a caution about administering lower end telephone systems through the telephone, which can be a challenging and time-consuming process.', 'duration': 638.35, 'highlights': ['The difference between telephones and voice over IP (VoIP) was emphasized, with the clarification that VoIP is audio communications over data networks, simulating a telephone, but not a telephone. 5', 'The significance of DMARC (Demarcation Point) points was explained, indicating that the telephone company is responsible for everything up to the DMARC point outside the building, while the responsibility inside the building lies with the owner or user. 4', 'The concept of hunt groups for routing incoming calls was discussed, highlighting that the call is automatically forwarded to the next number on the list if the previous number is busy, simplifying the management of incoming calls. 3', 'The role of PBX (Private Branch Exchange) in controlling outgoing calls and creating rules for long-distance calls was mentioned, indicating that the PBX is responsible for all outgoing routing. 2', 'The distinction between analog and digital stations was explained, with the clarification that analog stations can only communicate through an analog port, while digital stations can only communicate through a digital port. 1']}], 'duration': 682.295, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/Tahfluke6cU/pics/Tahfluke6cU2553966.jpg', 'highlights': ['Understanding the concepts of telephone systems is crucial for easy administration.', 'Telephone systems are relatively easy to administer in comparison to servers and networks.', 'The chapter discusses an overview of telephone systems and the process of calls reaching a building.', 'The difference between telephones and voice over IP (VoIP) was emphasized, with the clarification that VoIP is audio communications over data networks, simulating a telephone, but not a telephone.', 'The significance of DMARC (Demarcation Point) points was explained, indicating that the telephone company is responsible for everything up to the DMARC point outside the building, while the responsibility inside the building lies with the owner or user.', 'The concept of hunt groups for routing incoming calls was discussed, highlighting that the call is automatically forwarded to the next number on the list if the previous number is busy, simplifying the management of incoming calls.', 'The role of PBX (Private Branch Exchange) in controlling outgoing calls and creating rules for long-distance calls was mentioned, indicating that the PBX is responsible for all outgoing routing.', 'The distinction between analog and digital stations was explained, with the clarification that analog stations can only communicate through an analog port, while digital stations can only communicate through a digital port.']}], 'highlights': ['The PBX routes all calls within the telephone system, while the voicemail system manages all voice-related tasks.', 'The PSTN is a public switch telephone network connecting all telephone systems through central offices, with the significance of trunk lines in determining simultaneous calls.', 'Understanding the distinction between analog and digital telephone lines is crucial for communication in telephone systems.', 'The purchase of ports for the voicemail system directly impacts the number of users who can engage with it simultaneously.', 'Understanding the concepts of telephone systems is crucial for easy administration.']}