Avaya G450 Installing And Upgrading page 275

Figure 152: Network interface at "dumb" block with repeater line to fiber MUX for an
MM710 multi-media module
USB
MDM
CONSOLE
ALM
CPU
PWR
1 2
Figure notes:
1. Span section 1
2. Span section 2
3. G450 Media Gateway
4. E1/T1 port on an MM710
multi-media module
You are responsible for finding and correcting problems in the customer wiring (section 1 and
the loopback cable portion of section 2). The DS1 service provider is responsible for finding and
correcting problems in the majority of section 2.
1. Test customer premises wiring from the MM710 to the loopback jack, as described in
Testing the DS1 span from the loopback jack to the smart jack
2. Test the loopback jack-to-dumb block and dumb block-to-CO wiring (section 2 in
Figure 151 and
This can be done using a loopback that "overlaps" the section of the span. Any of the
following loopbacks can do this:
The local MM710's line loopback, which the DS1 service provider at the CO end
●
typically activates, tests, and then deactivates.
G450
SERVICES ETR CCA ETH WAN ETH LAN
COMPACT FLASH
RST ASB
CARD IN USE 1 2 3 4 5 6
V10
V1 V5
V2 V6
V3 V7
V4 V8
5. RJ-48 to network interface (up to 1000 ft [305 m])
6. Loopback jack
7. Dumb block (demarcation point)
8. Repeater
9. Fiber multiplexer (MUX)
10. Central office
Figure 152).
DS1/T1 CPE loopback jack
on page 270.
Issue 2 June 2008 275