User manual

DEFINITY ECS Release 8.2 Maintenance for R8.2csi 555-233-119 Issue 1
April 2000
Maintenance for csi systems
1-82Install DS1 CPE Loopback Jack (T1 Only)
1
Figure 1-25. Network Interface at “Dumb” Block with Repeater Line to Fiber
MUX
Section 2 includes the short cable from the loopback jack to the “dumb” block
demarcation point (part of the loopback jack). This is the only portion o f section
2 that is part of customer premises wiring but is not covered in the loopback
jack’s loopback path.
Figure Notes:
1. Span Section 1
2. Span Section 2
3. 120A2 (or later) Integrated
Channel Service Unit (ICSU)
4. RJ-48 to Network Interface
(Up to 1000 Feet) (305 m)
5. Loopback Jack
6. “Dumb” Block (Demarcation Point)
7. Repeater
8. Fiber MUX
9. Central Office