Patent ID: 7127244

Claim:
In a communication system including a plurality of mobile switching centers, wherein an incoming call is received for a mobile unit at a serving mobile switching center (SMSC) of the plurality of mobile switching centers and the mobile unit is determined to be Within a location served by a border mobile switching center (BMSC) of the plurality of mobile switching centers, the SMSC defining mobile switching center where the mobile unit is registered and believed to be located and the BMSC defining a mobile switching center where the mobile unit is located but not registered, a method comprising: allocating processing resources for the incoming call at the SMSC, thereby defining SMSC allocated resources; allocating traffic channel resources for the mobile unit at the BMSC, thereby defining BMSC allocated resources; establishing a packet link between the SMSC allocated resources and the BMSC allocated resources; and connecting the incoming call to the packet link, thereby connecting the mobile unit to the incoming call.