Cellular telephone signalling circuit operable with different ce

Details Cellular telephone signalling circuit operable with different ce Cellular telephone signalling circuit operable with different ce

1992-06-05

1995-03-07

Kuntz, Curtis

Telecommunications

Transmitter and receiver at same station

Transceiver controlling a separate transceiver or receiver

455 331, 455 70, 379 59, H04B 140, H04B 726, H04Q 704

Patent

active

053966538

ABSTRACT:
Apparatus operable with different cellular telephone systems and signalling protocols is described. Signalling messages, both data messages and supervisory related signals between a cellular telephone microcontroller (4) and a base station are transferred via a baseband signalling circuit (10). The baseband signalling circuit is operable to employ different signalling protocols, the protocol being selected by control bits provided from the microcontroller to the signalling circuit. In a preferred embodiment, the signalling protocol selection is made between an AMPS/TACS signalling protocol and a NAMPS/NTACS subaudible signalling protocol.

REFERENCES:
patent: 4984290 (1991-01-01), Levine et al.
patent: 5020092 (1991-05-01), Phillips et al.
patent: 5020093 (1991-05-01), Pireh
patent: 5127042 (1992-06-01), Gillig
patent: 5175872 (1992-12-01), Borras
patent: 5187809 (1993-03-01), Rich et al.
patent: 5228074 (1993-07-01), Mizikovsky

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