What is required to configure a SIP server connection?

Owned by Graham Balchin
Last updated: Jun 01, 2018
1 min read

To register a Gemini or Messenger matrix with a third party SIP server, the following information is required:

  • The IP address of the SIP server
  • The coding profile assigned by the server.


The Trilogy system will also need to register each extension or alias. This requires a unique name, user and password from the SIP server.  The SIP server is usually set to provide individual usernames.

  • Name – User name, typically this is the phone extension number registered with the SIP server.
  • User - User name for extension, does not need to be unique.
  • Password – Password for the extension, does not need to be unique.


By default Gemini uses the following ports for the SIP connection:

  • UDP 5060 for the SIP call port, this is configurable in the Trilogy Editor if this needs to be changed.
  • UDP 10000 for the RTP/RTCP port, this is configurable in the Trilogy Editor if this needs to be changed.


An example of SIP Aliases in the Trilogy Gateway Editor > Host Advanced Editor is shown below.

A typical coding profile is G711A with a 10mS packet size.

The default Registrar expiration time is 3600 seconds. Depending on the SIP server this may need to be reduced to 120 seconds.



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