|
Message
|
Function
|
| Call establishment |
|
| SETUP |
Initiate the call establishment |
| CALL PROCEEDING |
Call establishment has begun |
| CONNECT |
Call has been accepted |
| CONNECT ACKNOWLEDGE |
Call acceptance has been acknowledged |
| Call clearing |
| RELEASE |
Initiate call clearing |
| RELEASE COMPLETE |
Call has been cleared |
| STATUS ENQUIRY (SE) |
Sent to solicit a status message |
| STATUS (S) |
Sent in response to SE or to report error |
| Global call reference |
| RESTART |
Restart all VCs |
| RESTART ACKNOWLEDGE |
ACKS the RESTART Point-to-multipoint |
| operations |
| ADD PARTY |
Add party to an existing connection |
| ADD PARTY ACKNOWLEDGE |
ACKS the ADD PARTY |
| ADD PARTY REJECT |
REJECTS the ADD PARTY |
| DROP PARTY |
Drops party from an existing connection |
| DROP PARTY ACKNOWLEDGE |
ACKS the DROP PARTY |