Local call completion for time division multiplexing system

Details Local call completion for time division multiplexing system Local call completion for time division multiplexing system

1976-09-27

1978-01-24

Robinson, Thomas A.

179 15AT, 179 18J, H04J 300, H04M 302, H04Q 360

Patent

active

040705510

ABSTRACT:
Apparatus within a time division multiplex telecommunications system for terminating local traffic at a local distributing center and eliminating the need for use of channels to the switching center. The system employs time slots for calls to the switching center and other time slots for local calls. Digits representing the called line are stored in a register at the calling station. The register is interrogated after sufficient digits have been stored to inidicate the destination as local or switching center. When a local call is recognized, a bistable in the local distributing center is set. When the end of dialing signal is received, a code is generated to release the channel connection to the main exchange and to complete the call locally over time slots dedicated to serving local calls.

REFERENCES:
patent: 3319008 (1967-05-01), Kneisel et al.
patent: 3456082 (1969-07-01), Brown
patent: 3462557 (1969-08-01), Brooks et al.
patent: 3778555 (1973-12-01), Nordling et al.
patent: 3796835 (1974-03-01), Closs et al.

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