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Communication Manager Maintenance-Object Repair Procedures
696 Maintenance Procedures for Avaya Communication Manager 3.0, Media Gateways and Servers
The dotted lines in Figure 35: Path of the BRI Port Local TDM Loop Around on page 696 show
how a Loop Around test is performed for the B channels. The figure shows a terminal
connected to a BRI line board using a TN556. If a TN2198 is used the terminal would be
connected to a NT1, and the NT1 to the BRI board.
Figure 35: Path of the BRI Port Local TDM Loop Around
Tone
Generator
Tone
Detector
BRI Line
Board
TDM Bus