User's Manual

BTS Redundancy/Alarm Testing68P09258A31–A

Oct 2003

1X SCt 4812T BTS Optimization/ATP

3-119

MGLI/GLI Redundancy Test

CAUTION

This test can only be performed when the MM path is established

by the MM (not just with LAPD link connected). Attempting to

force the GLIs to “hot swap” under alarm monitor control, when

isolated from the MM, causes MGLIs to hang up.

Table 3-56: MGLI/GLI Redundancy Test (with MM Connection Established)

Step Action

NOTE

S This test assumes the alarm monitor is NOT connected to the BTS and the T1/E1 span is connected

and communication is established with the MM.

S BOTH GLIs must be INS before continuing.

1 Verify the BBXs are enabled and a CDMA carrier is present.

2 Identify the primary and redundant MGLI pairs.

3 Pull the MGLI that is currently INS–ACT and has cage control.

4 Observe the BBX remains GREEN, and the redundant MGLI is now active.

5 Verify no other modules go OOS due to the transfer of control to the redundant module.

6 Verify that the BBXs are enabled and a CDMA carrier is present.

7 Reinstall the MGLI and have the OMCR/CBSC place it back in-service.

8 Repeat Steps 1 through 7 to verify the other MGLI/GLI board.