AudioCodes Mediant 2000

User's Manual 578 Document #: LTRT-68822
Mediant 2000
Parameter Description

[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:
 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.
Web: SIP T2
Retransmission Timer
[msec]
EMS: T2 RTX
[SipT2Rtx]
Defines the maximum interval (in msec) between retransmissions of SIP
messages (except for INVITE requests).
The default is 4000.
Note: The time interval between subsequent retransmissions of the
same SIP message starts with SipT1Rtx and is multiplied by two until
SipT2Rtx.
Web: SIP Maximum RTX
EMS: Max RTX
[SIPMaxRtx]
Defines the maximum number of UDP transmissions of SIP messages
(first transmission plus retransmissions).
The range is 1 to 30. The default is 7.