Intersystem group call communication system and method

Details Intersystem group call communication system and method Intersystem group call communication system and method

1989-05-30

1992-03-10

Eisenzopf, Reinhard J.

Telecommunications

Carrier wave repeater or relay system

Two separate way transmission

455 17, 455 20, 455 34, 455 56, 379 60, H04B 714, H04M 1100

Patent

active

050955292

ABSTRACT:
Communication systems having dedicated communication resources are provided with receivers that monitor the communication resources of other communication systems, and roamers are preregistered in non-home systems. Using this infrastructure, a group call can be sourced in one system and relayed to roamers located in other systems.

REFERENCES:
patent: 4233473 (1980-11-01), Frost
patent: 4578815 (1986-03-01), Persinotti
patent: 4718108 (1988-01-01), Davidson et al.
patent: 4775999 (1988-10-01), Williams
patent: 4833701 (1989-05-01), Comroe et al.

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