Patent ID: 9008081
Filing Date: 2015-04-14
Classification: H04L

Abstract:
1. In a communication network in which Session Initiation Protocol (SIP) is used to establish communications sessions with QoS treatment of bearer flows, a method of providing QoS treatment of a bearer flow destined to a non-SIP client attached to the network via an attachment segment connected to an attachment gateway, the method comprising steps of: receiving a SIP-INVITE message in respect of the bearer flow, the SIP-INVITE message containing a Universal Resource Identifier (URI) identifying the non-SIP client as a destination of the bearer flow; attempting to install a QoS policy on the attachment segment in accordance with a Traffic Specification (T-Spec) identified in the SIP-INVITE message; detecting a result of the attempt to install the QoS policy; and generating appropriate SIP messaging on behalf of the non-SIP client to either accept or refuse the bearer flow, based on the detected result.