Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular node for directing data and applying cryptography
Reexamination Certificate
2005-07-05
2005-07-05
Barrón, Gilberto (Department: 2132)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular node for directing data and applying cryptography
C370S410000
Reexamination Certificate
active
06915421
ABSTRACT:
State information for a call between a calling party and a called party is established without maintaining the state information at a gate controller. A setup request for the call is received at an originating gate controller. The originating gate controller is connected to a trusted network. The calling party is associated with an originating interface unit coupled to an untrusted network. The setup request for the call is authorized. The authorized setup request is sent to the called party. State information for the call is formatted based on a setup acknowledgment message received from the calling party. The state information for the call is sent from the originating gate controller to the originating interface unit without maintaining the state information at the originating gate controller.
REFERENCES:
patent: 4187399 (1980-02-01), Maxfield et al.
patent: 5577028 (1996-11-01), Chugo et al.
patent: 6065117 (2000-05-01), White
patent: 6128305 (2000-10-01), Hjalmtysson et al.
patent: 6694429 (2004-02-01), Kalmanek et al.
Kalmanek Jr. Charles Robert
Marshall William Todd
Mishra Partho Pratim
Nortz Douglas M
Ramakrishnan Kadangode K.
AT&T Corp.
Barrón Gilberto
Gurshman G.
LandOfFree
Method for establishing call state information without... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for establishing call state information without..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for establishing call state information without... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3411314