SYSTEM AND METHOD FOR VOICE CALL SETUP

摘要

A call is setup between an originating device (A) and a terminating device (B), which both have access to a public land mobile network (131, 132) and a mobile data network (121, 122). The originating and terminating devices device (A; B) include a respective software-implemented call handling tool (SWA; SWB) configured to assist a user in placing and receiving calls. Bridge nodes (140) are connected to the mobile data network (121, 122), the public land mobile network (131, 132) and a server node (110), which also is connected to the mobile data network (121, 122). In response to a call-setup command from a user of the originating device (A), the software-implemented call handling tool (SWA), on one hand, sends a call-setup request (1) to the server node (110); and on the other hand, makes a first call (2) to a first bridge node (140) over the public land mobile network (131) using a first telephone number (#1). The call-setup request (1) indicates an identity of the terminating device (B), and the first telephone number (#1) is stored in the originating device (A). Based on the call-setup request (1) and the first call (2), the server node (110) sets up a call between the originating and terminating devices (A; B) over a conference bridge (145) in the first bridge node (140), plus possibly another bridge node if the devices (A; B) are located relatively remote from one another.