METHOD AND SYSTEM FOR ENFORCING PROXY USE WITHIN AN ENTERPRISE COMMUNICATIONS SYSTEM

摘要

A method and system for enforcing the user of a proxy server within an en terprise communication system. The system includes an enterprise voice appli cation server configured to act as a SIP proxy to client devices, and a priv ate branch exchange configured to act as a SIP registrar. The client devices are configured to evaluate incoming SIP requests to determine whether they were received via the enterprise voice application server and, if not, to re spond with a SIP 305 Use Proxy message referencing the enterprise voice appl ication server in a Contact field. The 305 Use Proxy message forces the PBX or other intermediate SIP server to reroute the SIP request and any subseque nt SIP requests in the dialog through the enterprise voice application serve r.