Nortel SONET AccessNode Manual page 41

Procedure 2-3 (continued)
Testing optical protection switching
Step
7
8
Testing manual switching
9
Action
Set up STS-1 connections and establish DS3 or STS-1 traffic by entering:
csci
↵
slat <p or s>
where
<p> is used if primary optics are being tested
<s> is used if secondary optics are being tested
Note 1: Use QTRIB to make sure the tributary being used for testing is
connected to the optic under test.
Note 2: To maintain the STS-1 connections, you must remain in the same
NEUI screen where you entered the above CI commands. If you move from
one screen to another, the connections are dropped. If you stay in the same
screen you can issue new commands without affecting traffic.
On the DS3/STS-1 test set, press the Start/Stop button twice to reset the
error count to zero.
The test set displays 0 bit error.
Log in to the NE and display the protection status of the OC-3/OC-12 circuit
packs by entering:
pr;dtlprot <oc3 or oc12> ↵
The OC-3/OC-12 Protection screen is displayed, showing two circuit packs in
service.
Note 1: G1 corresponds to OC-3/OC-12 circuit pack in slot 9. G2 corresponds
to OC-3/OC-12 circuit pack in slot 10.
Note 2: One circuit pack is active and the other is standby. The green (Active)
LED is on for the active circuit pack. In the case of NT7E05 OC-12 VTBM
circuit packs, however, both circuit packs are active.
Note 3: An OC-12 Protection screen is shown below. If a circuit pack is locked
out, forced to protection, or automatically or manually switched to protection,
an asterisk (*) is displayed in the appropriate field. A dot (.) indicates normal
operation. A dash (-) indicates not applicable.
—continued—
AccessNode Site Testing Procedures 323-3001-221 Issue 2.0
DS3 tests, STS-1 tests, and optical in-bay tests 2-23