Patent ID: 6282416
Filing Date: 2001-08-28
Classification: H04W

Abstract:
A method of routing a wireless call to a wireless subscriber voice mailbox, comprising:responsive to determining that a wireless call from an originating mobile switching center, the originating mobile switching center serving a mobile unit originating the wireless call and having a connection to a land-line network, to a serving mobile switching center serving a roaming called subscriber should be redirected to a voice mailbox for the called subscriber:transmitting a transfer number request message from the originating mobile switching center to a home location register for the called subscriber, the transfer number request message requesting a transfer number for redirecting the wireless call;responsive to receiving the transfer number request message at the home location register, transmitting a routing request message from the home location register to an adjunct mobile switching center hosting connections to the called subscriber's voice mailbox and having a connection to the land-line network, the routing request message including a voice mailbox number for the called subscriber's voice mailbox;responsive to receiving the routing request message at the adjunct mobile switching center:allocating a temporary local directory number mapping to the adjunct mobile switching center to the wireless call;associating the temporary local directory number with the voice mailbox number within the adjunct mobile switching center; andreturning the allocated temporary local directory number to the originating mobile switching center; andredirecting the wireless call from the originating mobile switching center to voice mailbox connections within the adjunct mobile switching center via the land-line network utilizing the allocated temporary local directory number.