201Networking Configuration GuideChapter 21Programming BRI S-loops, lines, and ISDN devicesBRI modules support both trunk and station (telephone) services. The following describes theprocess 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 throughTelset Administration:• Element Manager: Configuration > Telephony > Loops• Telset interface: **CONFIG > Hardware > Module > TrunkMod > BRI - X > Loop XXXPrerequisitesComplete the following prerequisites checklist before configuring the modules.Setting BRI properties for ISDN device connectionsBRI S-loops support devices that use an ISDN interface. See “ISDN overview” on page 535. Youcan 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” onpage 187.Task: Configure BRI S-loops• “Setting BRI properties for ISDN device connections” on page 201• “DN records: ISDN devices” on page 202Ensure that system hardware is installed and operating correctly.Obtain all relevant central office/service provider information for theloops.BRI module is installed and operating (LEDs are correct).Wiring is complete for ISDN device configuration.
