Method and system for transferring a cellular telephone call bet

Telecommunications – Radiotelephone system – Zoned or cellular telephone system

Patent

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Details

455416, 455445, H04Q 722

Patent

active

058506063

ABSTRACT:
A method and system for performing a handoff of a cellular telephone call from a calling station to a mobile cellular telephone between an old intelligent cell site and a new intelligent cell site. The handoff is accomplished by using a conference bridge in a switch to connect a call segment to the new intelligent cell site to the call segments from the calling station to the old intelligent cell site. When a talk path to the new intelligent cell site is established, the talk path to the old intelligent cell site is terminated. The handoff is therefore accomplished by utilizing a conference bridge in the switch rather than putting an existing call on hold while a connection to a new intelligent cell site is established. Using a conference bridge to accomplish a handoff results in minimal interruption in the talk path of the call such that the handoff is imperceptible to the user.

REFERENCES:
patent: 4829554 (1989-05-01), Barnes et al.
patent: 5557664 (1996-09-01), Burns et al.
patent: 5646978 (1997-07-01), Klem et al.
patent: 5657375 (1997-08-01), Connolly et al.

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