Avaya CMC1 - Page 335

Install DS1/T1 CPE loopback jack
Issue 10 June 2005 335
Figure 105: Network interface at “dumb” block for a 120A2 (or later) ICSU
Figure notes:
1. Span section 1
2. Span section 2
3. 120A2 (or later) ICSU
4. RJ-48 to network interface (up
to 1000 ft. [305 m])
5. Loopback jack
6. Dumb block (demarcation point)
7. Interface termination or fiber multiplexer
(MUX)
8. Central office