Version 6.2 793 February 2011
SIP User's Manual 12. Configuration Parameters Reference
Parameter Description
NFAS Parameters
Note: These parameters are applicable to PRI interfaces.
Web: NFAS Group Number
EMS: Group Number
[NFASGroupNumber_x]
Indicates the NFAS group number (NFAS member) for the
selected trunk, where x depicts the Trunk ID.
0 = Non-NFAS trunk (default)
1 to 12 = NFAS group number
Trunks that belong to the same NFAS group have the same
number.
With ISDN Non-Facility Associated Signaling you can use
single D-channel to control multiple PRI interfaces.
Notes:
For this parameter to take effect, a device reset is
required.
This parameter is applicable only to T1 ISDN protocols.
For a detailed description on NFAS, see ''ISDN Non-
Facility Associated Signaling (NFAS)'' on page 643.
Web/EMS: D-channel Configuration
[DChConfig_x]
Defines primary, backup (optional), and B-channels only, per
trunk (where x depicts the Trunk ID).
[0] PRIMARY= Primary Trunk (default) - contains a D-
channel that is used for signaling.
[1] BACKUP = Backup Trunk - contains a backup D-
channel that is used if the primary D-channel fails.
[2] NFAS = NFAS Trunk - contains only 24 B-channels,
without a signaling D-channel.
Note: This parameter is applicable only to T1 ISDN
protocols.
Web: NFAS Interface ID
EMS: ISDN NFAS Interface ID
[ISDNNFASInterfaceID_x]
Defines a different Interface ID for each T1 trunk (where x
denotes the trunk ID).
The valid range is 0 to 100. The default interface ID equals
the trunk's ID.
Notes:
To set the NFAS interface ID, configure ISDNIBehavior_x
to include '512' feature per T1 trunk.
For a detailed description on NFAS, see ''ISDN Non-
Facility Associated Signaling (NFAS)'' on page 643.
Web: Enable ignoring ISDN
Disconnect with PI
[KeepISDNCallOnDisconnectWithPI]
Allows the device to ignore ISDN Disconnect messages with
PI 1 or 8.
[1] = The call (in connected state) is not released if a
Q.931 Disconnect with PI (PI = 1 or 8) message is
received during the call.
[0] = The call is disconnected (default).
Web: PI For Setup Message
[PIForSetupMsg]
Determines whether and which Progress Indicator (PI)
information element (IE) is added to the sent ISDN Setup
message. Some ISDN protocols such as Euro ISDN can
optionally contain PI = 1 or PI = 3 in the Setup message.
[0] = PI is not added (default).
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