Method and system for reducing call setup processing cost by determining when to forward calls to detached subscribers

An information handling system for reducing call setup cost for mobile communications networks, comprising:

• means for determining at a home location register if a mobile terminal for a subscriber has detached from a visiting mobile switching center, including means for determining at said home location register if a condition Detachi is true;
• means for determining if subsequent calls for said mobile terminal should be forwarded to said visiting mobile switching center by said home location register based on call arrival characteristics for said subscriber in response to said mobile terminal not being detached;
• and
• means for caching attach/detach mobile terminal information at a gateway mobile switching center for use by said gateway mobile switching center in determining to forward incoming calls for said mobile terminal to said home location register.

A computer program product residing on computer usable medium for reducing call setup cost for mobile communications networks, comprising:

• instruction means for determining at a home location register if a mobile terminal for a subscriber has detached from a visiting mobile switching center, including instruction means for determining at said home location register if a condition Detachi is true;
• instruction means for determining if subsequent calls for said mobile terminal should be forwarded to said visiting mobile switching center by said home location register based on call arrival characteristics for said subscriber in response to said mobile terminal being not detached;
• and
• instruction means caching said determining information at a gateway mobile switching center for use by said gateway mobile switching center in determining to forward incoming calls for said mobile terminal to said home location register.