Nortel SONET AccessNode Manual page 49

Procedure 2-3 (continued)
Testing optical protection switching
Step
42
43
Action
Disconnect the DS3/STS-1 test set from the BNC I/O card. Remove the BNC
I/O card. Use a small screwdriver to turn the locking screw to the left to unlock
the I/O card. Remove the DS3/STS mapper or STS-1 interface card.
Leave the attenuated optical patch cords connected to the OC-3/OC-12
interface circuit packs. Leave the DS3/STS-1 test set connected to the
DSX-3/STS-1 cross-connect panel for Procedure 2-4 on page 2-32.
—end—
AccessNode Site Testing Procedures 323-3001-221 Issue 2.0
DS3 tests, STS-1 tests, and optical in-bay tests 2-31