Interoffice hand-off processing system and interoffice hand-off

Details Interoffice hand-off processing system and interoffice hand-off Interoffice hand-off processing system and interoffice hand-off

1998-07-24

2000-07-04

Eisenzopf, Reinhard J.

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455450, 455453, 455511, H04Q 722, H04B 726

Patent

active

060850884

ABSTRACT:
An interoffice hand-off processing system and an interoffice hand-off method which ensure the maintenance of a call of a mobile unit making interoffice movement even while an interoffice Map link is congested. When requested to execute an interoffice hand-off, unused channel selecting means of the interoffice hand-off processing system refers to an interoffice control signal link management table to search for an unused channel. If the interoffice control signal link is congested and no unused channel is found, reference is made to an interoffice speech link management table to select an unused channel. Using the channel thus selected, interoffice hand-off executing means executes the interoffice hand-off.

REFERENCES:
patent: 4670899 (1987-06-01), Brody et al.
patent: 5239678 (1993-08-01), Grube et al.
patent: 5442809 (1995-08-01), Diaz et al.
patent: 5574977 (1996-11-01), Joseph et al.
patent: 5850606 (1998-12-01), Bedingfield, Sr. et al.
patent: 5940763 (1999-08-01), Alperovich et al.

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