Instruction manual

System Testing and Verification
System Testing and Verification
This section contains procedures used by systems technicians to verify both the
service provisioned on the BRI lines and the proper functioning of the MERLIN LEGEND
BRI system in supporting BRI. Refer to the MERLIN LEGEND Communications System
Installation manual (555-620-141) and the MERLIN LEGEND Basic Rate Interface
Supplemental Reference (555-601-111) for complete installation instructions and
cautions.
Background
BRI lines from the 5ESS central office connect to the MERLIN LEGEND BRI system
through the 800 CO-BRI module installed on the carrier. Each module has eight ports.
Each port can be connected a Digital Subscriber Line (DSL) line via a D8W cord. Each
DSL supports two BRI lines, each with its own Directory Number (DN), that is, the
telephone number for the line. Each 800 CO-BRI module can be used to connect 16
BRI lines.
The MERLIN LEGEND BRI system internally maps each BRI line to a system line identified
by a unique line number (801 through 880), Lines can be assigned to stations as
Personal Lines or can be assigned to pools. Each station with a BRI line assigned as a
Personal Line button has full use of BRI features provisioned for the BRI line at the 5ESS
central office.
Figure 1 illustrates the physical connection of a DSL from the 5ESS central office to the
MERLIN LEGEND, the internal mapping of lines, and the assignment of lines to stations.
mm
Station Modules
Ext. 43
Figure 1. Mapping of Lines from the 5ESS Central Office to MERLIN LEGEND Stations
12 Basic Rate Interface (BRI) Provisioning Guide