Avaya 555-233-116 - Manual (Page 153)

Testing a loopback jack without a smart jack
Issue 4 October 2002 153 555-233-116
Figure 32. Network interface at “dumb” block with repeater line to fiber MUX for a
120A2 (or later) ICSU
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. Repeater
8. Fiber multiplexer (MUX)
9. Central office