browser.sip.gateway.port

Port number for the Voice Browser service to send SIP messages to the Telephony Session service.

The default depends on the Voice Browser service instance: 5064 (first instance), 5074, 5084, and 5094.

If you change the default, then you also have to change the port number for ts.SIPLocalPort on the Advanced tab for the Telephony Session service. These values must match. See ts.SIPLocalPort for more information.