Loopback testing with a smart jack

1.

Span section 1

6.

Loopback jack

2.

Span section 2

7.

Dumb block (extended demarcation)

3.

Span section 3

8.

Network interface smart jack

4.

120A2 (or later) ICSU

9.

Interface termination or fiber multiplexer (MUX)

5.

RJ-48 to network interface

10.

Central office

 

(up to 1000 ft. [305 m])

 

 

Figure 26. Network interface at extended demarcation point (smart jack inaccessible) for a 120A2 (or later) ICSU

555-233-116

Issue 4 October 2002 147

Page 147
Image 147
Avaya 555-233-116 manual Issue 4 October 2002