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  2. No. 4 Electronic Switching System - Wikipedia

    en.wikipedia.org/wiki/No._4_Electronic_Switching...

    AT&T Long Distance was the primary customer for the switch. Driving development from the customer's perspective was AT&T VP Billy Oliver. [4] Previous tandem switching systems, primarily the No. 4 Crossbar switch, used analog voice signaling. The decision to switch in a digital voice format was controversial at the time, both from a technical ...

  3. 811 Tenth Avenue - Wikipedia

    en.wikipedia.org/wiki/811_Tenth_Avenue

    811 Tenth Avenue (also called the AT&T Switching Center) is a 370-foot-tall (110 m) skyscraper in the Hell's Kitchen neighborhood of Manhattan in New York City. [1] It was designed by Kahn & Jacobs and completed in 1964, occupying the full block of 10th Avenue 's western side between West 53rd and 54th Streets .

  4. 5ESS Switching System - Wikipedia

    en.wikipedia.org/wiki/5ESS_Switching_System

    The 5ESS switch has three main types of modules: the Administrative Module (AM) contains the central computers; the Communications Module (CM) is the central time-divided switch of the system; and the Switching Module (SM) makes up the majority of the equipment in most exchanges. The SM performs multiplexing, analog and digital coding, and ...

  5. 33 Thomas Street - Wikipedia

    en.wikipedia.org/wiki/33_Thomas_Street

    33 Thomas Street (formerly the AT&T Long Lines Building) is a 550-foot-tall (170 m) windowless skyscraper in the Tribeca neighborhood of Lower Manhattan in New York City, New York, United States. It stands on the east side of Church Street , between Thomas Street and Worth Street .

  6. One in Four iPhone Users Would Dump AT&T for Verizon ... - AOL

    www.aol.com/2010/09/21/iphone-users-verizon-att...

    Almost one in four users of Apple's (AAPL) iPhone would switch to Verizon Communications (VZ) from AT&T (T) as their cell phone carrier once AT&T's exclusive agreement with the iPhone expires ...

  7. List of telephone switches - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone_switches

    EMS-1 (The ITEC Electronic Modular Switch is an electronic direct control switching system. The modules are combined to form a complete switch or any of the modules can be added to your present Step-by-Step Systems.) EMS-2 (The EMS-2 RURAL SWITCH is a stored program control analog switch designed to be cost-effective in small exchanges.

  8. Number One Electronic Switching System - Wikipedia

    en.wikipedia.org/wiki/Number_One_Electronic...

    The voice switching fabric plan was similar to that of the earlier 5XB switch in being bidirectional and in using the call-back principle. [clarification needed] [citation needed] The largest full-access matrix switches (the 12A line grids had partial access) in the system, however, were 8x8 rather than 10x10 or 20x16.

  9. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

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