Testing A Loopback Jack Without A Smart Jack - Avaya g700 Installation And Upgrades

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 MM710 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 37 and Figure
Figure 37: Network interface at "dumb" block for an MM710 multi-media module
ALM
TST
ACT
SHUT DOWN
OK TO
REMOVE
Figure notes:
1. Span section 1
2. Span section 2
3. G700 or G350 Media Gateway
4. E1/T1 port on an MM710
multi-media module
38.
1
5
4
ALM SO EI SM EM SI EO
TST
ACT
SIG
E1/T1
ALM
TST
ACT
SERVICES USB 1 USB 2
1 2 3 4 5
ALM
TST
ACT
1 2 3 4 5
6
3
EIA 530A DCE
6 7 8
6 7 8
5. RJ-48 to network interface (up to 1000 ft. [305 m])
6. Loopback jack
7. Dumb block (demarcation point)
8. Interface termination or fiber multiplexer (MUX)
9. Central office
DS1/T1 CPE loopback jack
2
7 8 9
prdfcs8a KLC 080602
Issue 8.1 June 2005 407