Patton electronics ipRocketLink IAD 3086, Руководство пользователя

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9 • Diagnostics Model 3086 G.SHDSL Integrated Access Device User Guide
138 T1/E1 Diagnostics
keyboard of the local terminal will appear on the local terminal screen after having been passed to the remote
Model 3086 and looped back). See Figure 13.
Figure 13. Remote Digital Loop
To perform an RDL test, follow these steps:
1. Activate the RDL by moving the front panel toggle switch DOWN to remote.
2. Perform a bit error test (BERT) using the internal V.52 generator (as described in section “BIT Error Rate
(V.52) Diagnostics” on page 142), or using a seperate BER Tester. If the BER test indicates a fault, and the
Local Line Loopback test was successful for both Model 3086s, you may have a problem with the twisted
pair line between the modems. You should then check the twisted pair line for proper connections and
continuity.
T1/E1 Diagnostics
The 3086/K offers two diagnostics loops for the T1/E1 interface: Network (line) loopback, and local loop,
These tests can be activated via the CLI/Web management menus
Network Loop
The Network (line) Loopback applies to the T1/E1 interface data traffic; it does not affect traffic from the
Ethernet port. The network Loop test verifies the operation of the T1/E1interface of the local unit and the T1/
E1 line. Any data received by the 3086 T1/E1 interface in this test mode will be echoed (returned) to the orig-
inating device. This test is useful when the device connected to the 3086’s T1/E1 interface is unable to send
loop codes to the local 3086’s T1/E1 CSU/DSU interface.
Figure 14. 3086 Line Loop
Remote 3086
DSL
Crossover
10/100
Ethernet
Power
MDI-X
Crossover
10/100
Ethernet
Power
MDI-X
Local 3086