Patent ID: 8185154

Claim:
A system for facilitating establishment of a telecommunication transaction using a mobile device, the system comprising: one or more a computer devices comprising at least one processor and operatively associated memory, wherein the one or more computer devices are programmed to: receive from the mobile device a call control request for a telecommunications transaction, wherein the call control request is received via a call control channel separate from bulk voice transport, wherein the bulk voice transport comprises at least one voice channel to transport voice data; determine a private branch exchange (PBX) extension for the user; retrieve a callback identifier for a user of the mobile device to be used in the requested telecommunications transaction, wherein the callback identifier represents a callback telephony endpoint, wherein the callback telephony end point represented by the callback identifier is selected from the group consisting of the mobile device and one or more other telecommunications devices; and execute the telecommunications transaction subsequent to the call control request being received, by causing: establishment of a communications session that includes the callback telephony endpoint represented by the callback identifier and at least one target telephony endpoint indicated by the mobile device, wherein a first portion of the communications session that includes the callback telephony endpoint is established at least in part by making an outbound call from a PBX associated with the user to the callback telephony endpoint, and a second portion of the communications session that includes the target telephony endpoint is established at least in part by making an outbound call from the PBX to the target telephony endpoint.