Nortel SONET AccessNode Manual page 73

Procedure 3-2 (continued)
Performing optical interface receiver sensitivity tests
Step
Performing optical lockouts
1
2
3
Action
If equipped, lockout the NT7E05 OC-12 VTBM circuit packs to prevent optical
protection switching during testing, by entering:
pr; dp oc12 g1 ↵
The OC-12 Protection screen is displayed.
lockout op w g1 ↵
y ↵
lockout op w g2 ↵
y ↵
Asterisks (*) are displayed in the LcktW column for units G1 and G2.
If equipped, lockout the NT7E01 OC-3 and NT7E02 OC-12 circuit packs to
prevent optical protection switching during testing, by entering:
pr; dp <oc3 or oc12> ↵
The OC-3 /OC-12 protection screen is displayed.
lockout op <gx> ↵
y ↵
where
<gx> is one of the optical circuit pack groups listed on page 4-3
(refers to only OC-3)
The screen displays an asterisk (*) in the Lockout column for the specified
optical group. The banner line is also updated under the Lockout column, and
a "Lockout request" alarm is raised.
Repeat step 2 once for each pair of equipped OC-3 or OC-12 circuit packs,
including the optical feeder pair and all optical tributary pairs.
—continued—
AccessNode Site Testing Procedures 323-3001-221 Issue 2.0
Tributary and optical tests for VTBM rings 3-11