Establishing connections across a communications network

Details Establishing connections across a communications network Establishing connections across a communications network

2008-07-01

2008-07-01

Shah, Chirag G (Department: 2619)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S400000, C709S227000

Reexamination Certificate

active

07394811

ABSTRACT:
On receipt of a request for a communication session over a communications network, such as an Internet Protocol communications network, a path for the session is established. In a preferred example the communications network is an MPLS network and the method uses a modified version of the SIP messaging protocol. Bandwidth along a chosen path is reserved and a messaging protocol such as CR-LDP used to establish this reserved path for the communication session. This creates a delay in the time taken to establish a communication session because the process of choosing a path and reserving bandwidth must be completed before the CR-LDP protocol is used. This delay is reduced by using modified SIP Protocol to perform the CR-LDP function too.

REFERENCES:
patent: 5991301 (1999-11-01), Christie
patent: 6075769 (2000-06-01), Ghanwani et al.
patent: 6408001 (2002-06-01), Chuah et al.
patent: 6735190 (2004-05-01), Chuah et al.

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