AudioCodes Mediant 800B User Manual page 720

Parameter
Web: Digital Out-Of-Service
Behavior
[DigitalOOSBehavior]
Web: Out-Of-Service Behavior
EMS:FXS OOS Behavior
[FXSOOSBehavior]
Retransmission Parameters
Web: SIP T1 Retransmission
Timer [msec]
EMS: T1 RTX
[SipT1Rtx]
User's Manual

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 the first trunk.
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.
Determines the behavior of FXS endpoints when a Busy Out
condition exists.

[0] None = Silence is heard when the FXS endpoint goes off-
hook.

[1] Reorder Tone = (Default) The device plays a reorder tone to
the connected phone / PBX.

[2] Polarity Reversal = The device reverses the polarity of the
endpoint making it unusable (relevant, for example, for PBX DID
lines).

[3] Reorder Tone + Polarity Reversal = Same as options [1] and
[2].

[4] Current Disconnect = The device disconnects the current to
the FXS endpoint.
Notes:

A device reset is required for this parameter to take effect when it
is set to [2], [3], or [4].

This parameter is applicable only to FXS interfaces.
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:

The first retransmission is sent after 500 msec.

The second retransmission is sent after 1000 (2*500) msec.
720
Mediant 800B GW & E-SBC
Description
Document #: LTRT-10274