Nortel Networks TP-1610 SIP user manual Working with DMS-100 Switches

Mediant 2000 SIP

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 (x = 0 to 255)

Note 1: 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.

Note 2: 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.

8.4.2Working 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 142 Document #: LTRT-72504