Abstract: Call management method and apparatus in a wireless communication network that route calls through multiple call switching centers. New calls are established when mobile stations seize radio links of a base station. As part of call setup, the base station determines whether the new call arrived to the base station through a hand-off technique or whether the call originated with the base station. If the call arrived by hand-off, the base station receives an identifier of a call switching center that administered the call prior to hand-off and routes the call to the identified call switching center. If the call originated with the base station, the base station communicates to the mobile station an identifier of a default call switching center that will handle the call and routes the call to the default call switching center.

Abstract: A method and apparatus for processing call data. A first server in active mode replicates call data to a second server in standby mode. The first server is monitored for a fault condition by the second server, as well as other network devices. If a fault condition is detected, the first server is switched to standby mode and the second server to active mode.