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2. List of telephone switches - Wikipedia

   en.wikipedia.org/wiki/List_of_telephone_switches

   The NX-1E was not a SPC switch, rather it was a conventional path controlled switching matrix with electronic processors (computers) replacing the control, route selection and translation (directory number to line ID) functions. NX2 (Family Small 90–1800 line CDO Xbar) NX2 (Original design 1959–1960) NX2A (Improved cabinets ~1962)

3. List of SIP software - Wikipedia

   en.wikipedia.org/wiki/List_of_SIP_software

   Dialexia VoIP Softswitches, IP PBX for medium and enterprise organizations, billing servers. IBM WebSphere Application Server - Converged HTTP and SIP container JEE Application Server; Interactive Intelligence Windows-based IP PBX for small, medium and enterprise organizations; Kerio Operator, IP PBX for small and medium enterprises

4. Telephone switchboard - Wikipedia

   en.wikipedia.org/wiki/Telephone_switchboard

   PBX switchboard, 1975. A telephone switchboard is a device used to connect circuits of telephones to establish telephone calls between users or other switchboards. The switchboard is an essential component of a manual telephone exchange, and is operated by switchboard operators who use electrical cords or switches to establish the connections.

5. List of Cisco products - Wikipedia

   en.wikipedia.org/wiki/List_of_Cisco_products

   Routers and switches The machines that route and redirect packets across a network, including those for networks of smart meters. [7] Security and surveillance IP cameras, data and network security etc. [8] Voice and conferencing VOIP phones and gateway-systems, WebEx, video conferencing Wireless Indoor Wi-Fi Access points, Wireless Controller

6. Nortel - Wikipedia

   en.wikipedia.org/wiki/Nortel

   Nortel Secure Network Access (switch and software) Nortel Communication Servers, medium-to-large-scale VoIP PBX Systems; CS2100, CS2000, CS1500, CS1000 Nortel IP Phone 1120E Meridian Data Networking System (DV-1) Meridian M4020: SG-1 analog wired logic control PBX SP-1 analog stored program control carrier switch Routers Software Other WAN ...

7. Nortel Meridian - Wikipedia

   en.wikipedia.org/wiki/Nortel_Meridian

   It was introduced by Northern Telecom in December 1974 at the USITA convention in San Francisco, with an original capacity from 100 to 7,600 lines, and became the first fully digital PBX announced on the global market aimed at the smaller PBX market. In the early 1970s, most PBXs were either electromechanical (e.g. cross-bar) or based on a ...