Patent ID: 8694648
Filing Date: 2014-04-08
Classification: H04L

Abstract:
1. A method for implementing a Session Initiation Protocol (SIP) feature, comprising: providing a shared line implementing a shared line protocol to serve a plurality of endpoints coupled to the shared line, the plurality of endpoints comprising at least a first endpoint and a second endpoint; establishing a SIP communication session via a communications platform, the communication session being between the first endpoint and a third endpoint, the communications platform implementing the shared line protocol to serve a plurality of endpoints using a single shared line, the third endpoint not one of the plurality of endpoints being served by the single shared line; after establishing the SIP communication session between the first endpoint and the third endpoint, sending, via the communications platform, a remote state notification comprising call information notifying the plurality of endpoints served by the single shared line of the SIP communication session; receiving a request from the second endpoint to join the SIP communication session between the first endpoint and the third endpoint; and integrating communications of the second endpoint into the SIP communication session between the first endpoint and the third endpoint.