Testing a loopback jack without a smart jack

1.

Span section 1

6.

Dumb block (demarcation point)

2.

Span section 2

7.

Repeater

3.

120A2 (or later) ICSU

8.

Fiber multiplexer (MUX)

4.

RJ-48 to network interface

9.

Central office

 

(up to 1000 ft. [305 m])

 

 

5.

Loopback jack

 

 

Figure 32. Network interface at “dumb” block with repeater line to fiber MUX for a 120A2 (or later) ICSU

555-233-116

Issue 4 October 2002 153

Page 153
Image 153
Avaya 555-233-116 manual Issue 4 October 2002