Nortel SONET AccessNode Manual page 52

2-34 DS3 tests, STS-1 tests, and optical in-bay tests
Procedure 2-4 (continued)
Testing DS3 or STS-1 protection switching
Step
Figure 2-3
DS3 or STS-1 test set connections to BNC I/O cards
DS3/STS-1
test set
DS3/STS-1
test set
2
3
4
5
AccessNode Vol 3B 323-3001-221 Issue 2.0
Action
BNC
DS3/STS-1
In
circuit pack
BNC
G1
Out
BNC
DS3/STS-1
In
circuit pack
BNC
G2
Out
Press the Start/Stop button twice to reset the error count to zero.
The DS3/STS-1 test set indicates in process and displays 0 bit error.
To verify digital continuity, press the Single Bit Error Inject button three times.
The DS3/STS-1 test set indicates 3 bit errors received.
Log in to the Network Element Status screen.
Display the protection status of the DS3/STS mappers or STS-1 interface
cards by entering:
pr;dtlprot <type> ↵
where
<type> is ds3 or sts1
The DS3 Protection screen is displayed.
—continued—
OC-3/ OC-3/
OC-12 OC-12
PC-16205
FW-16205
DS3/STS mapper
or STS-1 interface
card (DS3/STS-1
facilities are
looped back)