Search results “Telephone exchange systems”
EPABX System Installation | Telephone Exchange by Tech Guru Manjit
EPABX System Installation | Telephone Exchange by Tech Guru Manjit In various Topics we are uploading videos on various topics like technical, motivational, travel guide etc. Request all our Subscriber & non Subscriber to see like and share our videos & if you have any idea or you need any other informational video us to make please drop us a mail at [email protected] Regards Tech Guru Manjit
Views: 45436 Tech Guru Manjit
The Telephone Exchange (1982) British Telecom Schools Film
A Pacesetter production for British Telecom. BFI Database: The invention of the automatic telephone exchange system by Strowger and the history of its development. Looks in detail at various automatic systems and explains how they work, these include: the Strowger switching system; the cross bar selector; the reed relay electronic exchange; and the microchip technology of the System X exchange. Intended for schoolchildren aged 10-16 years. This is a new transfer of an severely faded 16mm print. Some colour correction has been applied to try and reduce the red cast. The copyright in this film belongs to BT Group.
Views: 61390 ephemeralfilm
Introduction to Telephone Systems
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
Views: 675836 Eli the Computer Guy
The Making of Information Age: Enfield Telephone Exchange
This film explores the story of the Enfield telephone exchange and the role of female operators in the development of telephone networks. The Enfield exchange was one of the last to be converted from manual to automatic switching. After closure, the Science Museum preserved a section of the switchboard which is now on display in the new Information Age gallery along with stories of the women who worked on the exchange. Information Age tells the story of how our lives have been transformed by information and communication technologies over the last 200 years. Visit http://www.sciencemuseum.org.uk/informationage or follow the conversation online via #smInfoAge to find out more. #ScienceMuseum #History #InformationAge
Views: 42364 Science Museum
AT&T Archives: The Step-By-Step Switch
See more from the AT&T Archives at http://techchannel.att.com/archives The purpose of this film was to show employees, back in 1951, how calls were automatically switched through an SxS office. This film gives a general appreciation of the importance, complexity, and cost of switching equipment in an average 1950s telephone office. The path of a call is illustrated as it runs through a demonstration unit. "Careful adherance to Bell System maintenance practices" is stressed. While this is only part I, Part II eventually showed the equipment in various types of use, and Part II showed the internal circuit operations. Switchers today are digital and look drastically different. These systems at this time were still not even transistorized, so this film shows a system that's not only years back in time, but many generations back in terms of technology. Producer: Audio Productions, Inc. Footage courtesy of AT&T Archives and History Center, Warren, NJ
Views: 242716 AT&T Tech Channel
Dialing Through The Step-by-Step Telephone Switching System
NOTE: ALL MY REPLIES TO COMMENTS PRIOR TO AUG 24, 2017 HAVE BEEN LOST DUE TO A PROBLEM WITH MY GOOGLE ACCOUNT. I WILL CONTINUE TO ANSWER NEW QUESTIONS GOING FORWARD. Watch a rotary dial telephone call progress through the SXS switching system to telephone number Beechwood 4-5789. You can see a complete SXS Central Office in operation at this link https://www.youtube.com/watch?v=_VO7MWFI9SU
Views: 9033 Hicken65
Strowger Step-by-step Demonstration
A short training film, believed to be from Telstra showing the operation of Strowger telephone switching using a model exchange. It illustrates a uniselector, group selectors and a final selector. Note the mix of 2000 type and 4000 type groups selectors. Video courtesy of Richard Youl. A correspondent adds: "This is from the first year apprentice course at the Telecom Training School at Tooronga in Melbourne from the mid 1970's. I remember it well."
Views: 37210 Sam Hallas
What is a PBX?
A PBX or Private Branch Exchange, is the part of a private telephone system that manages phone calls both internally and externally for an organization. The PBX was developed to provide large companies a cost reduction in their telecommunications bill by letting them handle their own telephone system routing while still providing a telephone line for calling outside the companies’ network to the Public Switched Telephone Network or PSTN. A PBX can be located on premise, in the cloud, or through a hybrid of the two. Generally speaking cloud based systems are no longer referred to as a PBX but as a Unified Communication (UC) solution or UC as a service (UCaaS). From the technology perspective, there are four different types of phones or end points on a PBX: Analog, Digital, Voice over IP, and Session Initiation Protocol (or SIP). A PBX takes one or more of these languages and translates it so that the PSTN can understand and connect calls. To get to the PSTN, a PBX must use either a telecommunications service provider (TSP) or an internet service provider (ISP) such as AT&T, CenturyLink, Sprint, etc. The PBX reduces costs by sharing trunk lines between multiple stations. Instead of subscribing to 100 trunk lines for 100 stations, a PBX delivers multiple stations for only one trunk line. Maintaining and updating an organizations' PBX is an important part of keeping an organization connected. The PBX serves as a critical component of an organization’s telephone network, so minimizing system downtime is utterly vital, which includes continually keeping the network's software up to date. Complex PBX systems often require professional telephony engineers to diagnose and fix problems, which is why many companies choose to form an ongoing maintenance relationship with a specialized PBX service provider.
Views: 5573 Continuant
PSTN - Public Switched Telephone Network
Today my topic is Public Switched Telephone System, or PSTN. PSTN is a century-old worldwide connected telephone network. The PSTN topology and class level might be different in different countries but the original design was only for circuit switching analog telephone calls. Nowadays, the backbone of the PSTN is mostly digital, and most local loops are still using analog technologies. In terms of physical media, PSTN is a mix of copper wires, cables, fiber optics, and wireless. PSTN forms a basic foundation and a very important part in the infrastructure of WAN technologies. My topics are organized by playlists: https://www.youtube.com/user/sunnylearning/playlists My most popular videos: https://www.youtube.com/user/sunnylearning/videos?sort=p&view=0&flow=grid Wireless and Wi-Fi https://www.youtube.com/watch?v=PcbTMSf0D2M&list=PLSNNzog5eydvJG48PYnWnNY7-tQIfxTRb Remote Access/WAN technologies https://www.youtube.com/watch?v=B1tElYnFqL8&list=PLSNNzog5eyduTVeiVQRV_AM35YKSrFgzr This is my education channel. My topics cover networking, security, programming, data structure, algorithm, programming and other computer-related materials. Please leave comments, questions and subscribe! Thank you very much! Sunny Classroom
Views: 7882 Sunny Classroom
CP's Local Telephone Exchange Personal Tour. Unedi
This is Raw footage of my Trip to the Local Telephone Exchange Location in Miami, Florida. Switches, dslams, Local Exchanges, ISDN, LD, InterLATA, ect. ATT Local Switch in the 305 / 786 Area Code
Views: 17310 Carlos Pineiro
VS Compact Installation Complete
For high packaging density at sites with restricted space conditions. The main applications are in the remote access, CCC and PABX areas. VS Compact is distinguished by the best transmission values and the number of structural sizes (2, 5, 8, 10, 16, 20 and 25 DA). VS Compact can also be connected doubled and with stranded wires.
UAX13 Telephone Exchange
A live public UAX13 Telephone Exchange filmed in September 1989. This was a British Post Office rural telephone exchange in common use throughout the UK.
Views: 28890 conceptcity
Automatic telephone exchange - operating
A step-by-step automatic telephone exchange brought into operation in 1921 at a post office in Ljubljana, which was the first automatic exchange in the then Kingdom of Serbs, Croats and Slovenes (later Yugoslavia). Originally it connected 500 users, but the facilities were later upgraded. Before being donated to the Museum of Post & Telecommunications in 1981, it had a total of 2000 subscribers. Two automatic telephones are connected to the exchange; the first is a Siemens & Halske and the other Telefongyar R. T. Budapest.
Views: 30860 Sounds of Changes
Telecoms - BT Mobile Exchange Power Technician
Interview with one of the 200+ Mobile Exchange Power Technicians in the UK
Views: 7609 e-skills UK
AT&T Archives: Switchboards, Old and New (Bonus Edition)
See more from the AT&T Archives at http://techchannel.att.com/archives Introduction by George Kupczak of the AT&T Archives and History Center Switchboards, Old and New traces the development of voice switching methods from the first system that utilized the wires of a burglar alarm unit in Boston in 1877, to the "latest type" of switching in central offices, circa 1932. Along the way, we get the evolution of the Operator as well. Originally teenage boys were hired as operators, but it was quickly noted that they were not ideal due to being rambunctious and prone to pranks. Emma and her sister Stella Nutt were the first female operators, hired in 1878. They started a tradition that continued to the 1970s, when equal hiring practices made it possible for men to become operators as well, again. Switchboards started to be replaced by TSPS (Traffic Service Position System), starting in 1969. Voicemail trees, also called Interactive Voice Response, also replaced operators. In 2000, there were fewer than 300,000 operators working in the U.S., most at the switchboards of large companies or hotels. That number continues to drop by the thousands every year. Produced by Loucks and Norling Studios Footage courtesy of AT&T Archives and History Center, Warren, NJ
Views: 95828 AT&T Tech Channel
Multi-line Phone System Tutorial
A basic overview of multi-line phone systems and how to perform simple functions such as putting callers on hold, transferring calls, conferencing calls, paging, accessing voicemail and recording greetings.
Views: 177325 learn4lifewithmrsb
SOHO-308C PBX System Demonstration
This is my new PBX I just bought. It supports 3 CO Lines, and 8 extensions. I bought it from eBay for about $85-$90 AUD, plus shipping. The system is very easy to use and supports most features that other systems do, such as MoH (Music on Hold), Auto-Attendant, and you can change all the extension numbers around too!
Views: 19490 Ryan O'Malley
Telephone System Call Routing
Info Level: Beginner Presenter: Eli the Computer Guy Date Created: August 8, 2010 Length of Class: 60 Minutes Tracks Telephone Systems Prerequisites Introduction to Telephone Systems Purpose of Class This class discusses how calls get routed within a telephone system PBX. Topics Covered Extensions Call Paths Out Calling Incoming Trunk Groups Auto Attendants Hunt Groups Call Groups Out Going Call Routing Class Notes Introduction All telephone systems use the same basic concepts to route calls Extensions PBX's relate to everything as an extension. A station is an extension. An Auto Attendant is an extension, etc. You should create a range of extensions for use for stations and subscribers, and a different range of extensions to be used for administrative purposes (Auto Attendants, Hunt Groups, etc) You can determine how many numbers make up an extension (2,3,4) Call Paths Call paths determine how an incoming call is routed. A standard call path states that a station is rung 3 times, and then the call is routed to voicemail. You can have call paths with 20+ steps. Out Calling Out calling allows the PBX to route calls from the outside to outside lines. A call from the outside can be routed to a cell phone. Out calling requires 2 trunk lines (1 for the incoming call, and one for the outgoing call) Out calling can be a HUGE security problem if not administered properly. Incoming Trunks Incoming trunk lines are programmed into Trunk Groups. Individual Trunk Groups are pointed at a specific extension for incoming calls (Usually an Auto Attendant) Multiple businesses in the same building can use the same PBX by putting their phone lines into Trunk Groups and then pointing the Trunk Group to their Auto Attendant. Auto Attendants "If you would like Sales press 1" The message for the Auto Attendant resides on the Voicemail System. You create an Extension, make it an Auto Attendant, point the message to a Voicemail box, determine what will happen when users press number keys, determine what happens if the user does nothing. Hunt Groups Are Extensions that when called ring a series of other extensions in order. If the first extension in the hunt Group is busy, the next extension in the Hunt Group is rung. Weighted or Smart Hunt Groups can route calls to extensions based on programmed parameters. Call Groups Call Groups are Extensions where numerous Extensions are rung at the same time when the Extension is dialed. Outgoing Call Routing You can create Outgoing Trunk Groups based on whether the trunk lines have local, long distance, or international calling privileges. You can create codes to allow managers to be able to access any Outgoing Trunk Group. Outgoing Call Routing is based on the number of digits dialed, and whether those digits match a pattern that allows the call to be routed to a specific Outgoing Trunk Group.
Views: 157319 Eli the Computer Guy
How to STAR WIRE up to 24 telephone extensions from one connection box
Hi, this 'How To' video shows a neat way to connect up to 24 telephone extensions into one junction box (box conn 201). It is perfect if you have a refurbished property or a new build and you have run all the telephone cables back to one point. This box connection 201 will allow you to star wire all the extension from one point by adapting the box using jumper wires as shown in the video. Many thanks Vince To visit my ebay shop please click this link http://www.mrtelephone.co.uk
Views: 57609 My Mate VINCE
Understanding the Place of IP Telephony in the Network
http://www.xorcom com - This short animated presentation covers the network topology of a hybrid IP-PBX telephony solution, detailing the equipment used and explaining how Asterisk based Xorcom systems route both PSTN and VoIP calls in the enterprise environment.
Speedy Cutover Service, SXS switching cutover to ESS filmed live at Glendale CA central office, 1984
A brief but surprisingly exciting 1984 video showing the preparation and live, real-time cutover from Step By Step switching system (SXS) to a new electronic switching system (ESS) in Glendale, California. Western Electric offered the Speedy Cutover Service to switching offices throughout the Bell System. Western Electric installers would visit a facility and prepare it, installing the new equipment inside the facility. They would identify and mark the existing cables that would need to be cut, then prepare employees for the cutover to the new ESS system. Previously a cutover from step-by-step (or from crossbar service) to ESS would take many frantic minutes, upwards of an hour, during which time active telephone service would be lost mid-call. With the speedy cutover service – 51 installers simultaneously cutting 927 cables as fast as possible, all on cue – the interrupted service could be brought down to well under a single minute. The climax here is unquestionably the moment of truth, the cutting of the cables, which is shown in real time. After making sure no emergency calls are underway, and with a shout of "Let's cut it!" the race is on, with three camera set-ups and a disco score capturing and preserving the moment of truth. Footage Courtesy of AT&T Archives and History Center, Warren, NJ
Views: 41704 AT&T Tech Channel
The Life of a Telephone Operator in 1969 (with special introduction) - AT&T Archives
See more from the AT&T Archives at http://techchannel.att.com/archives Bonus Edition Introduction by George Kupczak of the AT&T Archives and History Center. A non-linear documentary about operators - male and female, but mostly female - at their work, and describing their work and the type of customers they encounter. A fascinating inside look at the skills needed by operators in dealing with the public. Shot in the style of a Maysles- or Weisman-type documentary. There are clips from a 1913 D.W. Griffith silent film, Telephone Girl and the Lady, at the beginning and end. "The operator's job, despite tensions and aggravations, is one which consists primarily of human contact and as such, carries rich rewards." Cox went on to direct television in Hollywood and also documentaries for PBS. She now lives in Kentucky and still makes documentaries. Cox also made "All in a Day's Work" for AT&T. Directed by Nell Cox Song "Operator" by the New York Rock & Roll Ensemble was originally released as a 45rpm record. Footage courtesy of AT&T Archives and History Center, Warren, NJ
Views: 154507 AT&T Tech Channel
BT System X - 1980s Promotional Film
British Telecom film from the 1980s explaining the System X project. Note: I do not own this video. I got it for free from BT's website and I'm making it available for free on Youtube. Reuploaded with better quality audio.
Views: 8332 Leigh Hamilton
What is PABX, the High Quality Tutorial that you Must See about Private Automated Branch eXchange
The PABX allows and controls the sharing of different phone lines between different communication devices. Open this page: http://www.ozekiphone.hu/what-is-pabx-private-automated-branch-exchange-311.html PABX (Private Automated Branch eXchange) controls the switching of different communication channels among different communication devices. The channel between the devices are built up by Session Initiation Protocol (SIP). PABX is used by call centers in particular. This system provides single access to multiple lines.
Views: 55656 Joseph Richardson
Manual telephone exchange
Manual desktop telephone exchange with wooden casing, a dial and a Bakelite handset. Manual exchanges were in use from the second half of the 19th century. In Slovenia, the last manual telephone exchange with eight connections ceased operating in September 1987. Two magneto telephones are connected to the exchange. The exchange is part of the collection of Museum of Post & Telecommunications.
Views: 5412 Sounds of Changes
Inside a Siemens (GPT) ISDX Telephone Switch
These are all over the place but it's not often you'll see one, let alone four! Time to take a look inside three ISDX 300s, plus their bigger brother, the ISDX 3000. 2019 UPDATE HERE: https://youtu.be/rcNhsQI-Ve4 Info on the ISDX 300, a.k.a. ISDX-S: http://hipath.custhelp.com/DX_files/HiPath_DX_EP_V9new/EP%20v9.0/description/isdx_s/main_equipment.htm Info on the ISDX 3000, a.k.a. ISDX-L or ISDX-T: http://hipath.custhelp.com/DX_files/HiPath_DX_EP_V9new/EP%20v9.0/description/isdx_lt/main_equipment.htm INDEX 0:09 Introduction 1:03 Under the hood of a running ISDX 300 2:56 Decommissioned ISDX 300s - TWO of them 4:01 Inside the old one (rev. 5.x) 4:16 RISC loader 5:09 RISC CPU 5:49 4 Channel Serial I/O 6:16 Delta Channel Controller 6:33 Digital Switch Controller 6:58 300 Baud Modem 7:28 Shelf Interface 7:45 16 Channel GP I/O 8:19 Rotary Register 8:53 Universal Trunk Controller 9:39 4 Channel Interface 1 (SPM) 10:32 2M Word Memory and Control 11:03 CPU 1 11:30 CPU 2 12:37 16 Channel Codec 12:59 16 Channel Extension 13:47 Communications Equipment 14:20 8 Channel Bypass 15:20 Ops Console Interface 16:39 Inside the new one (rev. 9) 17:00 System Card 17:51 Backplanes 19:16 30 Channel Digital Line Card 19:37 GPIO and Modem 20:22 Backplanes again 21:56 Bigger brother: the ISDX 3000
Views: 13622 AintBigAintClever
Telephone and PBX Cross-connections
shows how cross-connections are made from Station cabling over to the PBX. Using a one-pair 22 or 24 gauge copper jumper wire, we make "cross-connects" from the wire going out to the Telephone jack over to the ports (terminals or TN) on the PBX. Office phones are plugged in to wall jacks. Those Wall jacks have a wire that runs in the wall, through the ceiling and over to a PBX room. Inside the PBX room, those cable come together on 66-blocks. Cross-connects are used to make the electrical connection from the Station wiring over to a particular port on the PBX.
Views: 38504 DIY Telecom
Telephone Exchange PBX (two way)
(EN) The PBX system allows you to make phone calls between two telephones. Initiate a phone call occurs when a telephone receiver is high; the call is completed when both phones are closed. (RO) Aceasta centrala telefonica permite efectuarea de convorbiri telefonice intre doua posturi telefonice. Iniţierea unui apel telefonic are loc atunci când un telefon are receptorul ridicat; convorbirea se încheie atunci când ambele telefoane sunt închise.
Views: 28971 Iulian Magirescu
Siemens 100-line PBX Telephone Exchange
Film showing a 100-line Siemens telephone exchange from around 1960 with step-by-step selectors. The final selectors is called vierechwähler an Siemens type of Strowger.
Views: 15678 Telehistoriska
The Line Finder In The Step-By-Step Telephone Switching System
This video describes in detail the operation of the electromechanical line finder switch in the Step-By-Step telephone switching system. You can see a complete SXS Central Office in operation at this link https://www.youtube.com/watch?v=_VO7MWFI9SU
Views: 2257 Hicken65
How to Set-up an Enterprise Asterisk-based PBX in 10 Minutes (including coffee break)
http://www.xorcom.com - In this video we demonstrate how fast and easy it is to set up an enterprise level Asterisk-based PBX system. In just ten minutes a technician connects a system supporting four PRI lines and 96 FXS analog extensions, complete with analog and IP video phones! The secret to the configuration speed and simplicity is the fact that Xorcom's XPP USB2 drivers are embedded in all standard Asterisk distributions. These drivers enable the PBX to automatically detect the telephony ports. See for yourself!
How Does A Telephone Exchange System Work Office 2019
How Does A Telephone Exchange System Work Office 2019 telephone switching system telecommunication switching systems and networks
T  5.1 Intro to switching system and PSTN evolution
A complete video lecture course with anaimations on telecom technology
How to setup a PBX (step by step guide)
Full series: http://www.ringroost.com/how-to-setup-a-pbx.php Learn how to setup your office PBX. Taylor walks through how to use RingRoost to setup your own PBX - for really cheap.
Views: 324993 RingRoost
Electromechanical automatic telephone exchange
Dialing the last few digits before a connection is made. Recorded in Museum of Post and Telecommunications in Polhov Gradec, Slovenia.
Views: 38716 avian6
Panasonic PABX TA308 simplified DIY installation
Panasonic PABX TA308 simplified installation
Views: 269789 Scott Layton
AT&T Archives: What is the Bell System?
For more from the AT&T Archives, see http://techchannel.att.com/showpage.cfm?ATT-Archives The Bell System, which in 1976 employed nearly one million people at 27,000 locations worldwide, always benefited from explaining its scope to the public. This explanation is from a blue-collar POV, from a 'telephone man'. He divides the Bell businesses into 5 segments, and explains what each of them do. It's faux-folksy, but it does the job. Here are the company segments: 1. AT&T 2. Large local telephone companies (23 of them, like Mountain Bell, Pacific Bell, 3. Ohio Bell, etc) 4. Long Lines 5. Bell Laboratories 6. Western Electric Most people at the time knew of the Bell system as who rented you your phone, serviced the lines and provided basic and long distance telephone service. But the company extended far beyond that into military support operations, a number of much smaller subcompanies, and international telephony infrastructure projects. Footage courtesy of AT&T Archives and History Center, Warren, NJ
Views: 48122 AT&T Tech Channel
Old-style telephone exchange in use
This is an old analog Strowger Switch: https://en.wikipedia.org/wiki/Strowger_switch And kids making pizza orders! This is at the Museum of Independent Telephony in Abilene, KS Full story and comments at http://changelog.complete.org/archives/9811-the-joy-of-exploring-old-phone-systems-pizza-and-discovery
Views: 3250 CosmicRay2515
My Home PBX System - Panasonic KX-TD816 / KX-TVP200
Dreaming of having your own Home PBX (telephone system)? Watch this video to see an overview of my system. My system consists of a Panasonic KX-TD816 (software version 1) Hybrid PBX and a KX-TVP200 Voice Processing System and many KX-T7230 digital speaker-phones with LCD display. Links to documentation: TD816 brochure: http://www.voicesonic.com/panasonic/manuals/KX-TD816-1232_System/Panasonic-KX-TD816-KX-TD1232.pdf TVP200 brochure: http://www.phoneservice.ro/ro/catalog/voice_mail/KX-TVP200300.pdf TD816 software versions: http://www.ntci.net/Tech-Notes/version_options.htm User manuals, Installation manuals, Programming manuals also readily available on the web.
Views: 185220 VE2ZAZ
Trunk Lines | Voice Over IP (Industry) +Telecommunications (Industry)
Trunk Lines IPage Telecom www.ipagecall.com Voice Over IP (Industry) +Telecommunications (Industry)
Views: 28634 ipagevidoes
PBX Private Branch Exchange Telephone Systems: "Invisible Diplomats" (1965) AT&T; Audrey Meadows
AT&T high-end business marketing film for PBX (Private Branch eXchange) switchboards. The film stars Audrey Meadows & Ruta Lee, the cinematographer was Hal Mohr (A Midsummer Night's Dream, The Phantom of the Opera, Rancho Notorious...). Two different kinds are shown: Audrey Meadows' PBX is a more traditional cord switchboard. The operator answers and connects calls by plugging cords into jacks. Ruta Lee's PBX is the latest (in 1965) cordless switchboard. Calls are processed by pressing a sequence of buttons, instead of using cords and jacks. http://en.wikipedia.org/wiki/Business_telephone_system#Private_branch_exchange A private branch exchange (PBX) is a telephone exchange or switching system that serves a private organization and performs concentration of central office lines or trunks and provides intercommunication between a large number of telephone stations in the organization. The central office lines provide connections to the public switched telephone network and the concentration aspect of a PBX permits the shared use of these lines between all stations in the organization. The intercommunication aspect allows two or more stations to establish telephone or conferencing calls between them without using the central office equipment. Each PBX-connected station, such as a telephone set, a fax machine, or a computer modem, is often referred to as an extension and has a designated extension telephone number that may or may not be mapped automatically to the numbering plan of the central office and the telephone number block allocated to the PBX. Initially, the primary advantage of a PBX was the cost savings for internal phone calls: handling the circuit switching locally reduced charges for telephone service via the central office lines. As PBX systems gained popularity, they were equipped with services that were not available in the public network, such as hunt groups, call forwarding, and extension dialing. In the 1960s a simulated PBX known as Centrex provided similar features from the central telephone exchange. A PBX is differentiated from a key telephone system (KTS) in that users of a key system manually select their own outgoing lines on special telephone sets that control buttons for this purpose, while PBXs select the outgoing line automatically or, formerly, by an operator. The telephone sets connected to a PBX do not normally have special keys for central office line control, but it is not uncommon for key systems to be connected to a PBX to extend its services. A PBX, in contrast to a key system, employs an organizational numbering plan for its stations. In addition, a dial plan determines whether additional digit sequences must be prefixed when dialing to obtain access to a central office trunk. Modern number analysis systems permit users to dial internal and external telephone numbers without special codes to distinguish the intended destination. History The term PBX was first applied when switchboard operators managed company switchboards manually using cord circuits. As automated electromechanical switches and later electronic switching systems gradually replaced the manual systems, the terms private automatic branch exchange (PABX) and private manual branch exchange (PMBX) were used to differentiate them. Solid state digital systems were sometimes referred to as electronic private automatic branch exchanges (EPABX). Today, the term PBX is by far the most widely recognized. The acronym is now applied to all types of complex, in-house telephony switching systems. Two significant developments during the 1990s led to new types of PBX systems. One was the massive growth of data networks and increased public understanding of packet switching. Companies needed packet switched networks for data, so using them for telephone calls was tempting, and the availability of the Internet as a global delivery system made packet switched communications even more attractive. These factors led to the development of the voice over IP PBX, or IP-PBX. The other trend was the idea of focusing on core competence. PBX services had always been hard to arrange for smaller companies, and many companies realized that handling their own telephony was not their core competence. These considerations gave rise to the concept of the hosted PBX...
Views: 90 Old Movies Reborn
We Explore An Underground WW2 Telephone Exchange Tunnel Complex
A great location this one, we hit a lot of places that day and this was definitely one of the most interesting! A bit of history - A telephone exchange is a telecommunications system used in the public switched telephone network or in large enterprises. An exchange consists of electronic components and in older systems also human operators that interconnect (switch) telephone subscriber lines or virtual circuits of digital systems to establish telephone calls between subscribers. Joining me and this explore was Tazer & Warren, Channels linked below.. https://www.youtube.com/user/TazerCommunityGaming https://www.youtube.com/channel/UCqpRq4LtXJCX9TQKNXLlmVA
Views: 1519 The Bearded Explorer
PBX - Private Branch Exchange Telephone Exchange Dismantle Assemble and service .2019
PBX stands for Private Branch Exchange, which is a private telephone network used within a company or organization. The users of the PBX phone system can communicate internally (within their company) and externally (with the outside world), using different communication channels .
Views: 143 Layik Ahamed
How an IP PBX works and its Benefits
This presentation shows how an IP PBX works and what its main benefits are
Views: 247681 3cxvoip
AT&T Archives: Introduction to the Dial Telephone
See more from the AT&T Archives at http://techchannel.att.com/archives This short subject newsreel was shown in movie theaters the week before a town's or region's telephone exchange was to be converted to dial service. It's extremely short—a little over a minute, like a PSA. The film concisely explains how to use a dial telephone, including how to dial, how to recognize dial tone, and how to recognize a busy signal. The first dial telephonewas manufactured in 1897. It was part of an automatic switching/dialing system invented by Almon Strowger and patented in 1889. (You can see this switching system in action on the film "The Step By Step Switch"). But the Bell System didn't start to roll out Strowger's invention until 1919, though they did showcase the technology in 1904. In 1922, New York City was introduced to dial. The first popularized dial telephone was a desk set candlestick model; the smaller, more familiar desk set came later. It took decades for dial to sweep the entire Bell System. The last holdout was Catalina Island, off the coast of California, which finally converted to dial in 1978. In Camp Shohola, Pennsylvania, an internal automatic switch system still connects campers with the outside world, it's the oldest functioning Strowger switch in the world. Other Bell System films on the introduction of dial: * Dial Comes to Town * How To Use the Dial Telephone * Now You Can Dial Footage Courtesy of AT&T Archives and History Center, Warren, NJ
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