Establishing connections across a communications network

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

H - Electricity

04

L

H04L 29/02 (2006.01) H04L 12/56 (2006.01)

Patent

CA 2321475

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.

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