Locking And Unlocking Trunk Groups - AudioCodes Mediant 3000 User Manual

User's Manual
37

Locking and Unlocking Trunk Groups

You can lock a Trunk Group to take its trunks (and their channels) out of service. When
you initiate the lock process, the device rejects all new incoming calls for the Trunk Group
and immediately terminates active calls (busy channels), eventually taking the entire Trunk
Group out of service. You can also lock a Trunk Group "gracefully", whereby the device
also rejects new incoming calls, but terminates busy channels only after a user-defined
graceful period if the channel is still busy by the end of the period. The graceful period is
configured by the GracefulBusyOutTimeout parameter. When configured to 0, graceful lock
is disabled. When you lock a Trunk Group, the method for taking trunks/channels out-of-
service is determined by the DigitalOOSBehaviorForTrunk parameter for per trunk or
DigitalOOSBehavior parameter for all trunks.
If you have configured registration for the Trunk Group (see the 'Registration Mode'
parameter in the Trunk Group Settings table) and you lock the Trunk Group, it stops
performing registration requests with the Serving IP Group with which you have configured
it to register. When you unlock such a Trunk Group, it starts performing registration
requests with the Serving IP Group once its trunks return to service.

To lock or unlock a Trunk Group:
1. Open the Trunk Group Settings table (Configuration tab > VoIP menu > Gateway >
Trunk Group > Trunk Group Settings).
2. Select the table row of a Trunk Group that you want to lock or unlock.
3. From the Action drop-down list located on the table's toolbar, choose one of the
following commands:
•
Lock: Locks the Trunk Group.
•
Unlock: Unlocks a locked Trunk Group.
The Trunk Group Settings table provides the following read-only fields related to locking
and unlocking of a Trunk Group:

'Admin State': Displays the administrators state - "Locked" or "Unlocked"

'Status': Displays the current status of the channels in the Trunk Group:
•
"In Service": Indicates that all channels in the Trunk Group are in service, for
example, when the Trunk Group is unlocked or Busy Out state cleared (see the
EnableBusyOut parameter for more information).
•
"Going Out Of Service": Appears as soon as you choose the Lock button and
indicates that the device is starting to lock the Trunk Group and take channels out
of service.
•
"Going Out Of Service (<duration remaining of graceful period> sec / <number of
calls still active> calls)": Appears when the device is locking the Trunk Group and
indicates the number of buys channels and the time remaining until the graceful
period ends, after which the device locks the channels regardless of whether the
call has ended or not.
•
"Out Of Service": All fully configured trunks in the Trunk Group are out of service,
for example, when the Trunk Group is locked or in Busy Out state (see the
EnableBusyOut parameter).
Version 6.8
37. Locking and Unlocking Trunk Groups
585 Mediant 3000