Detecting a call trigger in a telecommunications network without requiring a service platform to remain connected to the call

摘要

A system and method to detect a call trigger during a call without requiring a service platform to remain connected to the call includes a first communications device 106 which transmits a call having call signalling and user communications. A signalling processor 112 receives the call signalling from the first communications device and selects a connection to a second communications device 108. An interworking unit 14 receives the user communications form the first communications device and converts it from a time division multiplex format to asynchronous transfer mode cells that identify a selected connection to the second communications device. An interworking unit 114 detects a call trigger in the user communications. The interworking unit transmits call trigger data to the signalling processor. The signalling processor processes the call trigger in the user communications. The interworking unit transmits call trigger data to the signalling processor, which processes the call trigger data and, upon validating the call trigger, instructs the interworking unit to transport the user communications to asynchronous transfer mode cells that identify the selected connection to the third communication device 110 and transports the user communications to the third communications device.