Patent ID: 8571019
Filing Date: 2013-10-29
Classification: H04L,H04Q

Abstract:
1. A method of operating a gateway comprising: a) receiving a request over a packet network from a service node to establish a call from a first communication client to a second communication client using a directory number associated with the second communication client, the request including a packet communication address associated with the first communication client; b) establishing a circuit-switched connection, which forms a portion of a bearer path for the call, over a circuit-switched telephone network with a network gateway associated with the second communication client; c) providing to the network gateway information bearing on the packet communication address for the first communication client using in-band signaling over the circuit-switched connection; d) effecting a transfer of the bearer path connection from the circuit-switched connection to a packet-switched connection; and e) receiving, via in-band signaling over the circuit-switched connection, information indicating that the call has been transferred, wherein traffic over the portion of the bearer path is digitized and transported in frames using a digital format comprising a plurality of bits, and the in-band signaling comprising replacing at least one of the plurality of bits in select ones of the frames with information corresponding to the packet communication address.