User`s guide

Administrator’s Guide for Polycom HDX Systems
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5. If you have configured the ISDN switch protocol to be AT&T 5ESS
Multipoint, NI-1, NI-2, or Nortel DMS-100, select and enter the ISDN
BRI SPIDs provided by your service provider.
After you enter the SPIDs, the system verifies them. If the system is unable
to verify the SPIDs, make sure the system is connected and that the ISDN
numbers you entered are correct.
If you do not have the SPIDs from your service provider, you can click
Start to Auto Detect SPIDs.
Configuring the PRI Network Interface
To configure the ISDN network interface settings:
1. Go to System > Admin Settings > Network > ISDN.
2. Configure these settings:
Points to note about fractional PRI:
• Assigned channels must begin with channel 1, and the channel numbers must
be consecutive.
• A D channel must be provided.
• Outbound call bandwidth must not exceed the available bandwidth.
Setting Description
Enable ISDN
H.320
Allows this system to make H.320 (ISDN) calls.
Area Code Specifies the area code for this system’s location.
PRI Video
Number
Specifies the ISDN number assigned to this system.
Outside Line
Dialing Prefix
Specifies the ISDN dialing prefix used to call outside the
network.
BONDING:
Calling Endpoint
Uses the Original
ISDN Number
Specifies the use of a bonding standard. Incoming bonded
calls will use the original number received to connect all
remaining lines required for the call.