Patent ID: 9277383
Filing Date: 2016-03-01
CPC Classification: H04L,H04W

Claim Text:
1. A method comprising: providing, by a control system, a signaling anchor point at a domain transfer function in a visited multimedia subsystem for a first access signaling leg and a remote access signaling leg for a communication session between a user element and a public service access point, wherein the public service access point is provided original location information bearing on the location of the user element and updated location information bearing on the location of the user element; coordinating call signaling for the communication session via the first access signaling leg and the remote signaling leg; receiving a session initiation message responsive to initiation of a new communication session via a transferring-in subsystem to effect a transfer from a transferring-out subsystem to the transferring-in subsystem; detecting an existence of the communication session with the user element when the session initiation message is received; and establishing a second access signaling leg for the communication session in response to the detecting the existence of the communication session.