Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-05-09
2006-05-09
Eng, George (Department: 2688)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S558000, C455S426100, C455S552100, C455S550100
Reexamination Certificate
active
07043238
ABSTRACT:
Disclosed is a CDMA terminal for providing a CDMA service to a global system for mobile communications (GSM) service subscriber in a CDMA service area which comprises: a subscriber identity module (SIM) cardholder for installing or uninstalling a SIM card of a GSM service subscriber, wherein when a SIM card of the GSM service subscriber is installed in the SIM cardholder in the CDMA service area, specific data are transmitted using a CDMA message in the case of authenticating the GSM service subscriber using information on the GSM service subscriber stored in the SIM card, and when the authentication of the GSM service subscriber is normally completed, the CDMA terminal is used for the GSM service subscriber as a roaming service terminal in the CDMA service area. According to the present invention, the GSM service subscriber can use his SIM card and number in the CDMA service area.
REFERENCES:
patent: 5537474 (1996-07-01), Brown et al.
patent: 5619491 (1997-04-01), Panzer
patent: 5862481 (1999-01-01), Kulkarni et al.
patent: 5987325 (1999-11-01), Tayloe
patent: 6438117 (2002-08-01), Grilli et al.
patent: 6714799 (2004-03-01), Park et al.
patent: 0 786 915 (1997-07-01), None
patent: 1 059 822 (2000-12-01), None
patent: 2 345 825 (2000-07-01), None
patent: 10-2000-0031583 (2000-06-01), None
patent: 2002021542 (2002-03-01), None
Ahn Byung-Ik
Choi Seong-Jin
Jeung Yuon-Pil
Kang Cheol-Hyun
Lee Kwang-Wouk
Alston & Bird LLP
Eng George
Kim Wesley
Ktfreetel Co., Ltd.
LandOfFree
CDMA terminal for providing roaming service to GSM service... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with CDMA terminal for providing roaming service to GSM service..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CDMA terminal for providing roaming service to GSM service... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3572595