Avaya CMC1 manual Adding or Removing Hardware

Adding or Removing Hardware

Figure 106: Network interface at “dumb” block with repeater line to fiber MUX for a 120A2 (or later) ICSU

Figure notes:
1.	Span section 1	5.	Loopback jack
2.	Span section 2	6.	Dumb block (demarcation point)
3.	120A2 (or later) ICSU	7.	Repeater
4.	RJ-48 to network interface (up	8.	Fiber multiplexer (MUX)
	to 1000 ft. [305 m])	9.	Central office

Proceed as follows.

1.Test customer premises wiring from the ICSU to the loopback jack, as described in the “DS1 Span Test” section.

2.Test the loopback jack-to-dumbblock and dumb block-to-CO wiring (section 2 in Figure 105 and Figure 106). This can be done using a loopback that “overlaps” the section of the span. Any of the following loopbacks can do this:

●The local ICSU’s line loopback, which the DS1 service provider at the CO end typically activates, tests, and then deactivates.

●The local DS1 interface’s payload loopback, which the DS1 service provider at the CO end activates and tests.

336 Installation, Upgrades and Additions for Avaya CMC1 Media Gateways