Outbound communication session establishment on a telecommunications network

摘要

Disclosed are techniques for establishing a communication session in a call server between communication devices. A call server receives a communication session establishment message from a communication device that has an associated VoIP telephone number. The message is indicative of the communication device wanting to place a call to a target communication device. The communication session establishment message includes the VoIP telephone number and a target communication device identifier. The call server establishes a first communication link with the device depending on the quality of a connection with an IP access point. The call server then establishes a second communication link with the target communication device. The call server may then join the first and second communication links to establish a communication session between the communication devices.

主权项

1. A method of establishing a call between a hybrid mobile device and a target communication device mediated by an IP network based call server, the method comprising:
in the call server:
receiving a communication session establishment message from the hybrid mobile device, the hybrid mobile device having an associated VoIP telephone number and an associated cellular telephone number, the message indicative of the hybrid mobile device wanting to place a call to the target communication device, the target communication device having an associated target communication device identifier, the communication session establishment message including information pertaining to the VoIP telephone number, the cellular telephone number, and the target communication device identifier;determining whether the hybrid mobile device is currently connected to an IP network access point with a quality of service (QoS) sufficient to support VoIP telephony;establishing a first communication link between the call server and the hybrid mobile device using the VoIP telephone number over a packet data network when the connection between the hybrid mobile device and IP network access point is sufficient to support VoIP telephony;establishing a first communication link between the call server and the hybrid mobile device using the cellular telephone number over a cellular network when the connection between the hybrid mobile device and IP network access point is insufficient to support VoIP telephony;establishing a second communication link between the call server and the target communication device using the target communication device identifier; andjoining the first and second communication links to establish a communication session between the hybrid mobile device and the target communication device.