AudioCodes E-SBC User Manual page 1235

CHAPTER 68 Configuration Parameters Reference
Parameter
'Out-Of-Service Behavior'
configure voip >
sip-definition
settings > oos-
behavior
[FXSOOSBehavior]
Retransmission Parameters
'SIP T1 Retransmission
Timer'
configure voip >
sip-definition
settings > t1-re-
tx-time
[SipT1Rtx]
Mediant 1000 Gateway & E-SBC | User's Manual
The parameter is applicable to the locking of Trunk Groups
feature (see Locking and Unlocking Trunk
Out feature (see the [EnableBusyOut] parameter), where
trunks/channels are taken out-of-service.
The range is 0 to 86,400. The default is 0.
Note:
■ The parameter is applicable only to digital interfaces.
■ To configure the method for taking trunks/channels out-of-
service, see the [DigitalOOSBehaviorForTrunk_x] parameter
for per trunk or the [DigitalOOSBehavior] parameter for all
trunks.
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.
Note:
■ A device reset is required for the parameter to take effect
when it is set to [2], [3], or [4].
■ The 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.
■ The third retransmission is sent after 2000 (2*1000) msec.
■ The fourth retransmission and subsequent retransmissions
until [SIPMaxRtx] are sent after 4000 (2*2000) msec.
- 1197 -
Description
Groups) and the Busy