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To define an explicit Interface ID for a T1 trunk (that is different from the default), use the
following parameters:
•
ISDNBehavior_x = 512 (x = 0 to 7 identifying the Mediant 2000 physical trunk)
•
ISDNNFASInterfaceID_x = ID
Note 1:
Note 2:
8.4.2
Working with DMS-100 Switches
The DMS-100 switch requires the following NFAS Interface ID definitions:
•
InterfaceID #0 for the Primary trunk
•
InterfaceID #1 for the Backup trunk (refer to the note below)
•
InterfaceID #2 for a 24 B-channel T1 trunk
•
InterfaceID #3 for a 24 B-channel T1 trunk
•
Etc.
Note: In the current version, the Mediant 2000 doesn't support the DMS-100 Backup trunk.
Therefore, InterfaceID #1, should not be used.
For example, if four T1 trunks on a Mediant 2000 are configured as a single NFAS group that is
used with a DMS-100 switch, the following parameters should be used:
ISDNNFASInterfaceID_0 = 0
ISDNNFASInterfaceID_1 = 2
ISDNNFASInterfaceID_2 = 3
ISDNNFASInterfaceID_3 = 4
NFASGroupNumber_0 = 1
NFASGroupNumber_1 = 1
NFASGroupNumber_2 = 1
NFASGroupNumber_3 = 1
DchConfig_0 = 0 ;Primary T1 trunk
DchConfig_2 = 2 ;24 B-channel NFAS trunk
DchConfig_3 = 2 ;24 B-channel NFAS trunk
DchConfig_4 = 2 ;24 B-channel NFAS trunk
Mediant 2000 SIP User's Manual
(x = 0 to 255)
Usually the Interface Identifier is included in the Q.931 Setup/Channel
Identification IE only on T1 trunks that doesn't contain the D-channel. Calls
initiated on B-channels of the Primary T1 trunk, by default, don't contain the
Interface Identifier. Setting the parameter 'ISDNBehavior_x' to 2048' forces
the inclusion of the Channel Identifier parameter also for the Primary trunk.
The parameter 'ISDNNFASInterfaceID_x = ID' can define the 'Interface ID' for
any Primary T1 trunk, even if the T1 trunk is not a part of an NFAS group.
However, to include the Interface Identifier in Q.931 Setup/Channel
Identification IE configure 'ISDNBehavior_x = 2048' in the ini file.
142
Mediant 2000 SIP
Document #: LTRT-72504
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