bearer capability), their length and a variable field of contents.

Message examples

Messages typically control or report the status of connections. For example:
* SETUP (indicating the establishment of a connection)
* CALL PROCEEDING (indicating that the call is being processed by the destination terminal)
* ALERTING (tells the calling party that the destination terminal is ringing)
* CONNECT (sent back to the calling party indicating that the intended destination has answered the call)
* DISCONNECT (sent

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