User Manual

AirLink Pro T1/E1 Rack MountInstaller’s Guide
Operations and Maintenance
Rev. B - 1/97
4-20
When you enter Y (yes) to confirm the request, the system starts the
loop test.
OK
AIRLINK PRO T1/E1>
Site Name: Sunnyvale 2
Local Loop Test, Far End
The Local Loop test (Figure 4-10) sets a loopback at the T1/E1 interface of the
remote (far end) radio unit and causes the T1/E1 signal to be returned to the
DTE. The AirLink Pro T1/E1 Rack Mount sends an unframed, all-ones Alarm
Indication Signal (AIS) toward the downstream (near end) AirLink Pro T1/E1
Rack Mount.
Figure 4-10
AirLink Pro T1/E1 Rack Mount in Local Loop Test, Far End