Hewlett Packard Enterprise Development LP

Patrick Broyer

Sebastien Bouat

Vijay Kamath

A method of processing session initiation protocol (SIP) call flows, the method comprising, at a back-to-back user agent (B2BUA) configuring a media user agent (UA) layer to interface between a SIP UA layer and a Media B2BUA layer. for call flow operation in the SIP UA layer to Media B2B UA layer direction, the configuring comprises, at the media UA layer first mapping each message received from the SIP UA layer comprised of one of a plurality of SIP layer message types into one of a SDP offer message type, a SDP answer message type and a third message type different from the SDP offer message and SDP answer types, and passing each first mapped message to the Media B2B UA layer for processing.

Media user agent and media back-to-back user agent layers

A method of processing session initiation protocol (SIP) call flows, the method comprising, at a back-to-back user agent (B2BUA) maintaining a plurality of predetermined call flow behaviours, each call flow behaviour in the plurality being self-contained and independent from other call flow behaviours in the plurality, each call flow behaviour in the plurality being applicable at one or more given call flow stages to provide one or more given actions for addressing a given call flow scenario, in response to occurrence of a given trigger event in a given SIP call flow, selecting a call flow behaviour from the plurality of call flow behaviours, and causing execution of one or more actions associated with the selected call flow behaviour to address a call flow scenario in relation to the given SIP call flow.

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Grenoble, France

Patrick Broyer