Avaya CMC1 Manual Do Utilizador
Adding or Removing Hardware
334 Installation, Upgrades and Additions for Avaya CMC1 Media Gateways
Figure 104: Network interface at extended demarcation point (smart jack accessible) for a
120A2 (or later) ICSU
120A2 (or later) ICSU
Testing a loopback jack without a smart jack
When the loopback jack is added to a span that does not contain a smart jack, the span is
divided into 2 sections: from the ICSU to the loopback jack and from the loopback jack to the
central office (CO). Section 2 includes the short cable from the loopback jack to the dumb block
demarcation point (part of the loopback jack). This cable is the only part of Section 2 that is part
of customer premises wiring. It is not covered in the loopback jack’s loopback path. See
divided into 2 sections: from the ICSU to the loopback jack and from the loopback jack to the
central office (CO). Section 2 includes the short cable from the loopback jack to the dumb block
demarcation point (part of the loopback jack). This cable is the only part of Section 2 that is part
of customer premises wiring. It is not covered in the loopback jack’s loopback path. See
Figure notes:
1. Span section 1
2. Span section 2
3. Span section 3
4. 120A2 (or later) ICSU
5. RJ-48 to network interface (up
2. Span section 2
3. Span section 3
4. 120A2 (or later) ICSU
5. RJ-48 to network interface (up
to 1000 ft. [305 m])
6. Dumb block (extended demarcation)
7. Loopback jack
8. Network interface smart jack
9. Interface termination or fiber multiplexer (MUX)
7. Loopback jack
8. Network interface smart jack
9. Interface termination or fiber multiplexer (MUX)
10. Central office
11. Dumb block to smart jack RJ-48