If you use Telephony Application Server, the Media Server is connected to the Telephony Control Server system via an SIP trunk. In this way it can accept incoming connection requests or set up outgoing ones. So that communication is still possible even if the connected Telephony Control Server system or the connection to the system fail, the Media Server can be connected to different Telephony Control Server systems.
The Media Server is only connected to Telephony Control Server via SIP if it is used under Telephony Application Server.
If the Media Server is used with Telephony Application Server, it always requires an SIP trunk for communicating with Telephony Control Server. If no SIP trunk is configured in Telephony Control Server for the Media Server, the communication between Media Server and Telephony Control Server will fail.
If the Media Server is connected to several SIP servers, it differentiates the relevant SIP connections as follows.
Describes the connection to the preferred Telephony Control Server system.
Describes the connections to all further Telephony Control Server systems.
By default, the Media Server uses the master connection to communicate. If, however, the preferred Telephony Control Server system or the connection to this system fails, the server communicates via the next configured alternative connection that is operable.
When the preferred Telephony Control Server system and the connection to the system are available again, the Media Server may use this system again after a specific period. The Media Server does not switch back to the master connection by default.
Parent topic: Media Services
How to Configure the SIP Provider