Avaya G450 Installing And Upgrading page 271

If the tests fails and there were no problems
loopback jack or Testing the DS1 span from the smart jack to the network interface termination
or fiber multiplexer (MUX), there is a problem between the loopback jack to the smart jack. Work
with the service provider to isolate the fault.
Figure 148: Network interface at smart jack for an MM710 multi-media module
MDM
ALM
CPU
PWR
Figure notes:
1. Span section 1
2. Span section 2
3. Span section 3
4. G450 Media Gateway
5. E1/T1 port on an MM710
multi-media module
G450
USB
CONSOLE SERVICES ETR CCA ETH WAN ETH LAN
COMPACT FLASH
RST ASB
1 2 CARD IN USE 1 2 3 4 5 6
V10
V1 V5
V2 V6
V3 V7
V4 V8
6. RJ-48 to network interface (up to 1000 ft
7. Loopback jack
8. Network interface smart jack
9. Interface termination or fiber multiplexer (MUX)
10. Central office
Testing the DS1 span from the MM710 to the
[305 m])
DS1/T1 CPE loopback jack
Issue 2 June 2008 271