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Installing an Integrated Channel Service Unit (ICSU) Module
Issue 10 June 2005 295
9. Reset the 120A3A by reseating the DS1 circuit pack.
When you reinsert the DS1 circuit pack after installing a 120A3A CSU the 120A3A resets.
The DS1 circuit pack initializes and tests the 120A3A. When initialization and testing is
complete, the green LED goes off. If the RED indicator is OFF after the test, the ICSU is
working.
10. If the circuits do not pass the self test, troubleshoot the 120A3A as instructed in Integrated
CSU Module Installation and Operation, 555-230-193.
Table 59
provides the H600-383 cable pinouts. Table 60: H600-383 Cable Lengths by Group
Number on page 295 provides the cable lengths for each cable group number.
.
Table 59: H600-383 Cable Pin Assignments
Pin Color Channel
Service Unit
Designation
Network
Designation
Function
1 BK Line in 0 R1 RCV
2 Y Line in 1 T1
3 Shield
4 R Line out 0 R XMT
5 G Line out 1 T
6 Shield
7 Not assigned
8 Not assigned
Table 60: H600-383 Cable Lengths by Group Number
Group Length Group Length
1 25 feet (7.7 m) 5 125 ft (38.1 m)
2 50 feet (15.2 m) 6 200 ft (71 m)
3 75 feet (22.9 m) 7 400 ft (122 m)
4 100 feet (30.5 m) 8 750 ft (198.1 m)