System and method of switching between calls when handing...

Details System and method of switching between calls when handing... System and method of switching between calls when handing...

2006-08-08

2006-08-08

Gary, Erika A. (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S426200, C455S445000

Reexamination Certificate

active

07089006

ABSTRACT:
A system and method switches between an active call and a call on hold when handing off a mobile station (204) from a Wireless Local Area Network (WLAN) (202). A Handover Starting message is received from a mobile station. The Handover Starting message includes at least one first identifier. A Notification message is also received. The Notification message includes a second identifier. The at least one first identifier is compared to the second identifier and a handover of the mobile station (204) proceeds when a match is determined. Subsequently, the mobile station (204) switches from an active call to a call on hold.

REFERENCES:
patent: 2004/0072593 (2004-04-01), Robbins et al.
patent: 2004/0266426 (2004-12-01), Marsh et al.
patent: 2005/0119005 (2005-06-01), Segal et al.
patent: 2005/0239468 (2005-10-01), Segal

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