Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-02-21
2006-02-21
Trost, William (Department: 2683)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S436000, C455S437000, C455S445000, C370S331000, C370S352000, C370S353000, C370S354000, C370S355000, C370S356000, C370S493000
Reexamination Certificate
active
07003298
ABSTRACT:
Devices, softwares methods hand off a live call from an original leg of a first modality (such as Circuit Switched Voice) to an alternate leg of another modality (such as Voice over Internet Protocol). An original leg of a call is established using the first modality. Then the alternate leg of the call is established using the second modality, while the first leg is still established. Then the call is handed off from the original leg to the alternate leg, while the connection is active.
REFERENCES:
patent: 5101501 (1992-03-01), Gilhousen et al.
patent: 6222829 (2001-04-01), Karlsson et al.
patent: 6230013 (2001-05-01), Wallentin et al.
patent: 6434367 (2002-08-01), Kumar et al.
patent: 6501952 (2002-12-01), Foster et al.
patent: 6504828 (2003-01-01), Corbett
patent: 6560457 (2003-05-01), Silver et al.
patent: 6603972 (2003-08-01), Sawyer
patent: 6631126 (2003-10-01), Berliner et al.
patent: 6678524 (2004-01-01), Hansson et al.
patent: 6687249 (2004-02-01), Noguera-Rodriguez et al.
patent: 6708031 (2004-03-01), Purnadi et al.
patent: 6714781 (2004-03-01), Pecen et al.
patent: 6721565 (2004-04-01), Ejzak et al.
patent: 6757270 (2004-06-01), Kumar et al.
patent: 6792273 (2004-09-01), Tellinger et al.
patent: 6834192 (2004-12-01), Watanabe et al.
patent: 6889045 (2005-05-01), Pan et al.
patent: 6907245 (2005-06-01), Ohlsson et al.
patent: 6912390 (2005-06-01), Andersson et al.
patent: 2002/0147008 (2002-10-01), Kallio
patent: 2002/0151304 (2002-10-01), Hogan
patent: 2003/0104813 (2003-06-01), Julka et al.
patent: 2003/0224795 (2003-12-01), Wilhoite et al.
patent: 2004/0077349 (2004-04-01), Barak et al.
Marger & Johnson & McCollom, P.C.
Rampuria Sharad
Trost William
LandOfFree
Devices, softwares and methods for handing off live calls... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Devices, softwares and methods for handing off live calls..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Devices, softwares and methods for handing off live calls... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3711680