User Manual

Chapter 5 Diagnostics and Troubleshooting AirMux-200 Installation and Operation Manual
5-6 Running Diagnostic Loopbacks
A loopback is deactivated and the corresponding status arrow in
the Main menu becomes dimmed.
Figure 5-4. Loopbacks Dialog Box
Local External Loopback
Local AirMux-200 can be set to an external loopback to test the local
E1/T1 port and its connection to the local side user equipment. In this
mode, data coming from the local user equipment is looped back to it
(see Figure 5-5). This loopback is initiated from a management station
connected to the local unit.
Testing
Equipment
Management
Station
E1/T1
Interface
Local RT
Figure 5-5. Local External Loopback
Remote Internal Loopback
Remote AirMux-200 can be set to an internal loopback to test
connection between the local and remote units, the local E1/T1 port
and its connection to the local side user equipment. In this mode, data
coming from the local AirMux-200 is looped back to it (see Figure 5-