AudioCodes Mediant 3000 User Manual

Version 7.0 449 Mediant 3000
User's Manual 22. Digital PSTN

ISDNIBehavior_x = 512 (x = 0 to the maximum number of trunks identifying the
device's physical trunk)

ISDNNFASInterfaceID_x = ID (x = 0 to 255)
Notes:
• 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 ISDNIBehavior_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
ISDNIBehavior_x = 2048 in the ini file.
22.7.2 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 ;The 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

AudioCodes Mediant 3000 Specifications

General

Brand	AudioCodes
Model	Mediant 3000
Category	Gateway
Language	English