A system and method of for exchanging information between a wireless network and an external system is disclosed. The wireless network detects trigger events related to communications with wireless subscribers. Certain event triggers cause the wireless system to create a message and to send that message to the external system. In response the external system may respond by sending data or information to the wireless system. The messages created by the wireless system may be in the form of query messages. The wireless system may create messages for the external system upon detection of handoff, origination, status, registration or other activity by the wireless subscriber.