277Programming Operations GuideChapter 10Configuring BRI LoopsThe following sections describe the information accessed under the Services, TelephonyServices, Loops headings. The Loops headings allow you to program BRI S, T, U2, and U4 ISDNloop settings.This section includes information about:• “BRI configuration process map” on page 278• “Identifying BRI T-loops (T1 profiles)” on page 279• “Identifying BRI T-loops (ETSI, QSIG)” on page 282• “Configuring D-packet service for T loops” on page 284• “Provisioning the loop variables” on page 285• “Setting BRI for ISDN device connections” on page 289The Loops screens define the loop numbers and loop attributes that correspond to the DIP switchsettings that were configured on the BRI trunk media bay modules installed on your system. Checkyour Programming Record to see which modules are installed, and what settings were chosen.Available BRI trunk loop attributes are determined by the country profile that is assigned to yoursystem. All profiles allow BRI programming, however, there is a difference between T1-basedprofiles and for E1-based profiles. Refer to “Core software and regions” on page 834 for a list ofcountries and profiles.Once loops are provisioned, the system assigns two line numbers per loop. These lines are thenprogrammed as you would any other lines. Refer to “BRI fields” on page 262 for a description ofthe headings that appear for lines defined for BRI loops. Lines programming is explained underChapter 9, “Configuring lines,” on page 239.The following figure shows a detailed view of the Loops headings.Figure 61 Loops headingsTask:Configure the BRI loops connected to the system through BRI modules.T-loops (North America):Telephony ServicesLoopsLoop 201-xxxSPIDsNetwork DNsDN 01D-packet serviceTEIsT-loops (ETSI, QSIG):Telephony ServicesLoopsLoop 201-xxxD-packet serviceTEIsS-loops (all profiles):Telephony ServicesLoopsLoop 201-xxxDNs on loopAssigned DNsDN XXX
