A gateway adapter for a circuit switched PBX system to allow the PBX system to
interoperate with a packet switched network containing a remote services unit.
The gateway adapter includes a PBX interface for communicating with the PBX system,
a network interface for communicating with the packet switched network and an interoperation
functional unit to effect manipulation on data received by the two interfaces to
allow the PBX system and the packet switched network to interoperate. One example
of interoperation is to perform call processing functions on call sessions through
the PBX system at a remote network services unit residing in the packet switched network.
