Version 6.6 643 Mediant 2000
User's Manual 45. Configuration Parameters Reference
Parameter Description
ut_x]
ISDN Setup message is sent to the Tel side (IP-to-Tel call
establishment) and a Connect message is received. If Alerting is
received, the timer is restarted.
The range is 1 to 600. The default is 180.
Note: The x in the ini file parameter name denotes the trunk number,
where 0 is Trunk 1.
Web: B-Channel
Negotiation
EMS: B-Channel
Negotiation For Trunk
Mode
[BChannelNegotiationF
orTrunk_x]
Determines the ISDN B-channel negotiation mode, per trunk.
 [-1] Not Configured = (Default) Use per device configuration of the
BChannelNegotiation parameter.
 [0] Preferred.
 [1] Exclusive.
 [2] Any.
Notes:
 This parameter is applicable to ISDN protocols.
 The option ‘Any’ is only applicable if TerminationSide is set to 0 (i.e.,
User side).
 The x in the ini file parameter name denotes the trunk number,
where 0 is Trunk 1.
[SendISDNServiceAfter
Restart]
Enables the device to send an ISDN SERVice message per trunk upon
device reset. The messsage (transmitted on the trunk's D-channel)
indicates the availability of the trunk's B-channels (i.e., trunk in service).
 [0] = Disable (default)
 [0] = Enable
EMS: Support Redirect
InFacility
[SupportRedirectInFaci
lity]
Determines whether the Redirect Number is retrieved from the Facility
IE.
 [0] = (Default) Not supported.
 [1] = Supports partial retrieval of Redirect Number (number only)
from the Facility IE in ISDN Setup messages. This is applicable to
Redirect Number according to ECMA-173 Call Diversion
Supplementary Services.
Note: To enable this feature, the parameter
ISDNDuplicateQ931BuffMode must be set to 1.
[CallReroutingMode]
Determines whether ISDN call rerouting (call forward) is performed by
the PSTN instead of by the SIP side. This call forwarding is based on
Call Deflection for Euro ISDN (ETS-300-207-1) and QSIG (ETSI TS 102
393).
 [0] Disable (default).
 [1] Enable = Enables ISDN call rerouting. When the device sends
the INVITE message to the remote SIP entity and receives a SIP
302 response with a Contact header containing a URI host name
that is the same as the device's IP address, the device sends a
Facility message with a Call Rerouting invoke method to the ISDN
and waits for the PSTN side to disconnect the call.
Note: When this parameter is enabled, ensure that you configure in the
Inbound IP Routing Table (PSTNPrefix ini file parameter) a rule to route
the redirected call (using the user part from the 302 Contact header) to
the same Trunk Group from where the incoming Tel-to-IP call was
received.
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