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Networking Configuration Guide
Chapter 21
Programming BRI S-loops, lines, and ISDN devices
BRI modules support both trunk and station (telephone) services. The following describes the
process for configuring station/device (S) loops, which support devices that use an ISDN interface.
You can assign a single device to a loop, or multiple devices connected through an NT-1 interface.
The following paths indicate where to configure loops through Element Manager and through
Telset Administration:
• Element Manager: Configuration > Telephony > Loops
• Telset interface: **CONFIG > Hardware > Module > TrunkMod > BRI - X > Loop XXX
Prerequisites
Complete the following prerequisites checklist before configuring the modules.
Setting BRI properties for ISDN device connections
BRI S-loops support devices that use an ISDN interface. See “ISDN overview” on page 535. You
can assign a single device to a loop, or multiple devices connected through an NT-1 interface.
• You can assign a maximum of eight devices to a loop.
• Any device can only be configured to one loop.
• S-loops do not supply any voltage for ISDN devices requiring power, such as video cameras.
Voltage for these devices must be supplied by an external source on the S-loop.
For detailed descriptions of the BRI module fields, refer to “BRI ISDN: BRI loop properties” on
page 187.
Task: Configure BRI S-loops
• “Setting BRI properties for ISDN device connections” on page 201
• “DN records: ISDN devices” on page 202
Ensure that system hardware is installed and operating correctly.
Obtain all relevant central office/service provider information for the
loops.
BRI module is installed and operating (LEDs are correct).
Wiring is complete for ISDN device configuration.
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