D 13373.08
NOVEMBER 2007
MPS
TANDBERG
MPS
ADMINISTRATOR GUIDE
PRI Board
Network Configuration
PRI Interface Configuration (3:3)
Allow NFAS
On:
If set to On, the Allow NFAS is enabled.
Off:
If set to Off, the Allow NFAS is disabled.
Non-Facilities Associated Signalling (NFAS), is an ISDN fea-
ture for sharing one ISDN D-channel across multiple ISDN PRI
interfaces.
The NFAS is only available on T1 networks
•
Backup D channels are not currently supported.
•
Example:
If we use NFAS to share one D channel across
eight PRI interfaces, we will gain seven extra B channels over
a configuration that used one D channel per PRI interface. Ad-
ditionally we may save expenses related to seven D channels.
INFO:
The
setting should be set to Off when
the Allow NFAS setting is enabled.
NFAS Group ID
It is possible to have 4 NFAS groups per card, where each
group may cover two or more PRI interfaces. Enter a value
between 1 and 4.
INFO:
This setting will only take effect when Allow NFAS is set
to On.
NFAS Interface ID
Each interface in an NFAS group must be assigned an NFAS
Interface ID.
These IDs must be the same as the ones used on the
•
network side of the interface.
Enter a value between 0 and 127.
•
The interface carrying the D channel for signalling must
•
be set to 0.
PRI Interfaces (3:3)
Save
- Press the Save button to save changes.
- continued: PRI Board Configuration
93
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