SIP User's Manual
400
Document #: LTRT-68808
Mediant
2000
9.4.2
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
InterfaceID #2 for a 24 B-channel T1 trunk
InterfaceID #3 for a 24 B-channel T1 trunk, and so on for subsequent T1 trunks
For example, if four T1 trunks on a device are configured as a single NFAS group with
Primary and Backup T1 trunks that is used with a DMS-100 switch, the following
parameters should be used:
NFASGroupNumber 0 = 1
NFASGroupNumber_1 = 1
NFASGroupNumber_2 = 1
NFASGroupNumber_3 = 1
DchConfig_0 = 0 ;Primary T1 trunk
DchConfig_1 = 1 ;Backup T1 trunk
DchConfig_2 = 2 ;B-Channel NFAS trunk
DchConfig_3 = 2 ;B-channel NFAS trunk
If there is no NFAS Backup trunk, the following configuration should be used:
ISDNNFASInterfaceID 0 = 0
ISDNNFASInterfaceID_1 = 2
ISDNNFASInterfaceID_2 = 3
ISDNNFASInterfaceID_3 = 4
ISDNIBehavior = 512 ;This parameter should be added because of
;ISDNNFASInterfaceID coniguration above
NFASGroupNumber_0 = 1
NFASGroupNumber_1 = 1
NFASGroupNumber_2 = 1
NFASGroupNumber_3 = 1
DchConfig_0 = 0 ;Primary T1 trunk
DchConfig_1 = 2 ;B-Channel NFAS trunk
DchConfig_2 = 2 ;B-Channel NFAS trunk
DchConfig_3 = 2 ;B-channel NFAS trunk
9.4.3
Creating an NFAS-Related Trunk Configuration
The procedures for creating and deleting an NFAS group must be performed in the correct
order, as described below.
¾
To create an NFAS Group, take these 3 steps:
1.
If there’s a backup (‘secondary’) trunk for this group, it must be configured first.
2.
Configure the primary trunk before configuring any NFAS (‘slave’) trunk.
3.
Configure NFAS (‘slave’) trunks.
Summary of Contents for Mediant 2000
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