DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance for csi systems
1-79Install DS1 CPE Loopback Jack (T1 Only)
1
Figure 1-22. Network Interface at Extended Demarcat ion Point (Smart Jack
Inaccessible)
Figure Notes:
1. Span Section 1
2. Span Section 2
3. Span Section 3
4. 120A2 (or later) Integrated
Channel Service Unit (ICSU)
5. RJ-48 to Network Interface
(Up to 1000 Feet) (305 m)
6. Loopback Jac k
7. “Dumb” Bloc k (Extended Demarcation)
8. Network Interface Smart Jack
9. Interface Termination or Fiber MUX
10. Central Office