Nortel SONET AccessNode Manual page 37

Procedure 2-3 (continued)
Testing optical protection switching
Requirements
(continued)
You need the following equipment to perform this procedure:
•
•
•
•
To establish traffic continuity with a point-to-point system or ring, a network
element user interface (NEUI) tool is used to set up simple STS-1 connections
between the feeder (OC-3/OC-12) optical circuit packs and the DS1/DS3,
STS-1, or OC-3 tributaries. See page 3-2 for a description of the Connection
Services Command Interpreter (CSCI) tool.
Action
Step
Setting up optical loopbacks
1
2
a DS3/STS-1 transmission test set (HP 156 MTS (Cerjac), or equivalent)
two (2) coaxial cables with proper connectors (BNC-to-BNC)
two (2) optical patch cords with miniature variable optical attenuator
(mVOA), NT7E47AA/BA/CA/FA, 5 m long
an optical power meter, 1310/1550 nm with a range of − 50 to +5 dB
DANGER
Risk of injury or damage
Read the warnings and precautions in Chapter 1 to
minimize any risk to personnel and equipment.
Note: STS-1 tributaries are supported only on a TN_BLSR shelf.
Action
Connect one end of the attenuated optical patch cords with mVOA to the
optical power meter.
Connect the other end of the optical patch cords with mVOA to the transmit
(Out) connector of the G1 OC-3/OC-12 interface circuit pack.
AccessNode Site Testing Procedures 323-3001-221 Issue 2.0
DS3 tests, STS-1 tests, and optical in-bay tests 2-19
—continued—