AudioCodes Mediant 3000, User Manual

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User's Manual 722 Document #: LTRT-89729
Mediant 3000
Parameter Description
[GracefulBusyOutTimeo
ut] Proxy server (or Proxy Set). In such a scenario, the device rejects new
calls from the PSTN (Serving Trunk Group), but maintains currently
active calls for this user-defined timeout. Once this timeout elapses, the
device terminates currently active calls and takes the trunk out of
service (sending the PSTN busy-out signal). Trunks on which no calls
are active are immediately taken out of service regardless of the
timeout.
The range is 0 to 3,600. The default is 0.
Web: Digital Out-Of-
Service Behavior
EMS: Digital OOS
Behavior For Trunk Value
[DigitalOOSBehaviorFor
Trunk_x]
Determines the method for setting digital trunks to Out-Of-Service state
per trunk.

[-1] Not Configured = (Default) Use the settings of the
DigitalOOSBehavior parameter for per device.

[0] Default = Uses default behavior for each trunk (see note below).

[1] Service = Sends ISDN In or Out of Service (only for ISDN
protocols that support Service message).

[2] D-Channel = Takes D-Channel down or up (ISDN only).

[3] Alarm = Sends or clears PSTN AIS Alarm (ISDN and CAS).

[4] Block = Blocks trunk (CAS only).
Notes:

This parameter is applicable only if the parameter EnableBusyOut is
set to 1.

The default behavior (value 0) is as follows:

ISDN: Use Service messages on supporting variants and use
Alarm on non-supporting variants.

CAS: Use Alarm.

When updating this parameter value at run-time, you must stop the
trunk and then restart it for the update to take effect.

To determine the method for setting Out-Of-Service state for all
trunks (i.e., per device), use the DigitalOOSBehavior parameter.

The x in the ini file parameter name denotes the trunk number,
where 0 is Trunk 1.
Web: Digital Out-Of-
Service Behavior
[DigitalOOSBehavior]
Determines the method for setting digital trunks to Out-of-Service state.
This configuration applies to all the device's trunks. For a description of
this parameter's options, see the DigitalOOSBehaviorForTrunk_x
parameter.
Notes:

To configure the method for setting Out-of-Service state per trunk,
use the DigitalOOSBehaviorForTrunk_x parameter.

To configure the timeout interval (in seconds) for Out-of-Service
graceful shutdown mode for busy trunks if communication fails with a
Proxy server (or Proxy Set), use the GracefulBusyOutTimeout
parameter.
Retransmission Parameters
Web: SIP T1
Retransmission Timer
[msec]
EMS: T1 RTX
[SipT1Rtx]
Defines the time interval (in msec) between the first transmission of a
SIP message and the first retransmission of the same message.
The default is 500.
Note: The time interval between subsequent retransmissions of the
same SIP message starts with SipT1Rtx. For INVITE requests, it is
multiplied by two for each new retransmitted message. For all other SIP
messages, it is multiplied by two until SipT2Rtx. For example, assuming
SipT1Rtx = 500 and SipT2Rtx = 4000: