AudioCodes Mediant 500L User Manual page 1094

Parameter
Digital Out-Of-Service
Behavior
configure voip > interface
e1-t1 > dig-oos-behavior
[DigitalOOSBehaviorForTru
nk_x]
User's Manual
see the DigitalOOSBehaviorForTrunk_x parameter for per trunk or
the DigitalOOSBehavior parameter for all trunks.
Defines the method for setting digital trunks to out-of-service state. The
parameter is defined per trunk. The parameter is applicable to the
Busy Out feature (see the EnableBusyOut parameter) and the
Lock/Unlock per Trunk Group feature performed in the Trunk Group
Settings table of the Web interface.

[-1] Not Configured = (Default) Use the settings of the
DigitalOOSBehavior parameter ("global" parameter that applies to
all trunks).

[0] Default =

ISDN: Sends ISDN Service messages to indicate out-of-service
or in-service state for ISDN variants that support Service
messages. For ISDN variants that do not support Service
messages, the device sends an Alarm Indication Signal (AIS)
alarm.

[1] Service = Sends ISDN Service messages indicating out-of-
service or in-service state.

Graceful out-of-service disabled: The device rejects new
incoming calls and immediately takes all channels (idle and
busy) out-of-service, by sending Service messages on the B-
channels. The device disconnects busy channels before it
sends out-of-service Service messages on 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 takes all idle channels
out-of-service and sends out-of-service Service messages to
the other B-channels as soon as they become idle. When
graceful period ends, the device disconnects all non-idle
channels and then sends out-of-service Service messages to
them.
When connectivity is restored for the Busy Out feature or the Trunk
Group is unlocked, the device brings all the trunks back into service
by sending in-service Service messages to all their B-channels.

[2] D-Channel = (Applicable only to ISDN and fully configured
trunks) Takes the D-channel down or brings it up.

Graceful out-of-service disabled: The device rejects new
incoming calls and immediately takes the D-channel down.

Graceful out-of-service enabled: The device rejects new
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
1094
Mediant 500L Gateway & E-SBC
Description
Document #: LTRT-10532