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Chapter 5 Diagnostics and Troubleshooting
AirMux-104 Installation and Operation Manual
5-6
Running Diagnostic Loopbacks
Remote External Loopback
Remote AirMux-104 can be set to an external loopback to test the remote E1 port
and its connection to the remote side user equipment. In this mode, data coming
from the remote user equipment is looped back to it (see
and its connection to the remote side user equipment. In this mode, data coming
from the remote user equipment is looped back to it (see
loopback is initiated by an inband command sent from a management station
connected to the local unit.
connected to the local unit.
Testing
Equipment
Management
Station
E1
Interface
E1
Interface
Local RT
Inband Loopback
Activation Command
Remote RT
Figure 5-7. Remote External Loopback
Local Internal Loopback
Local AirMux-104 can be set to close an internal loopback to test connection
between the local and remote units, remote E1 port and its connection to the
remote side user equipment. In this mode, data coming from the remote user
equipment is looped back to it (see
between the local and remote units, remote E1 port and its connection to the
remote side user equipment. In this mode, data coming from the remote user
equipment is looped back to it (see
). This loopback is initiated by an
inband command sent from a management station connected to the local unit.
Testing
Equipment
Management
Station
E1
Interface
E1
Interface
Local RT
Inband Loopback
Activation Command
Remote RT
Figure 5-8. Local Internal Loopback