AudioCodes Mediant 500 MSBR, Руководство пользователя

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Version 7.2 1073 Mediant 500 MSBR
User's Manual 74. Configuration Parameters Reference
incoming calls. Only when all channels are idle (when graceful
period ends or when all channels become idle before graceful
period ends, whichever occurs first), does the device take the D-
channel down.
When connectivity is restored for the Busy Out feature or the Trunk
Group is unlocked, the device brings the D-channels up again.
Note: For partially configured trunks (only some channels
configured), this option only rejects new calls for the trunk; the D-
channel remains up.

[3] Alarm = Sends or clears a PSTN Alarm Indication Signal (AIS)
alarm.

Graceful out-of-service disabled: The device rejects new
incoming calls and immediately sends an AIS alarm.

Graceful out-of-service enabled: The device rejects new
incoming calls and only when all channels are idle (when
graceful period ends or when all channels become idle before
graceful period ends, whichever occurs first), does the device
send an alarm on the trunk.
When connectivity is restored for the Busy Out feature or the Trunk
Group is unlocked, the device clears the alarm.
Note: For partially configured trunks (only some channels
configured), this option only rejects new calls for the trunk; no alarm
is sent.

[4] Block = (Applicable only to CAS) Blocks the B-channels.

Graceful out-of-service disabled: The device rejects new
incoming calls and immediately blocks all channels (idle and
busy). The device disconnects busy channels before blocking
them.

Graceful out-of-service enabled: The device rejects new
incoming calls. If at least one busy channel exists during the
graceful period, the device immediately blocks all idle channels,
and blocks the other B-channels as soon as they become idle.
When graceful period ends, the device disconnects all non-idle
channels and then blocks them.
When connectivity is restored for the Busy Out feature or the Trunk
Group is unlocked, the device unblocks all the B-channels.

[5] Service and D-Channel = (Applicable only to T1 ISDN variants
that support this method) Sends ISDN Service messages to indicate
out-of-service or in-service state and takes the D-channel down or
brings it up.

Graceful out-of-service disabled:
- Fully configured trunk (all channels): The device rejects new
incoming calls, disconnects busy channels, and takes the D-
channel down.
- Partially configured trunk (only some channels configured):
The device rejects new incoming calls, disconnects busy
channels, and sends out-of-service Service messages to all the
configured channels (D-channel remains up).

Graceful out-of-service enabled: The device rejects new
incoming calls and does the following:
- Fully configured trunk (all channels):
> If all channels are idle when the graceful period begins, the
device immediately takes the channels out-of-service without
sending out-of-service Service messages and instead, only
takes the D-channel down.