Apparatus and method for providing existing telephone switching

Details Apparatus and method for providing existing telephone switching Apparatus and method for providing existing telephone switching

1988-10-03

1990-02-20

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 60, H04J 302, H04Q 1104

Patent

active

049032631

ABSTRACT:
The invention relates to upgrading existing telephone central offices which utilize electromechanical or electronic switching equipment to include the capability of processing calls in the ISDN protocol. In particular, it relates to providing said switching equipment with the capability of controlling the connection, management, and disconnection of telephone circuits using Integrated Services Digital Network (ISDN), a national and international standard set of protocols for providing such circuit control and providing and receiving information via the ISDN protocol for enabling enhanced service in the switching equipment.

REFERENCES:
patent: 4589106 (1986-05-01), Prather et al.
patent: 4730312 (1988-03-01), Johnson et al.
patent: 4761779 (1988-08-01), Nara et al.
patent: 4789981 (1988-12-01), Yanosy, Jr. et al.

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