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CHAPTER 5: Operation
Figure 5-3. Remote digital loop.
IMPORTANT
Do not send a 511 test pattern from the test equipment when you
connect external test equipment to the Line Driver.
To perform an RDL test, follow these steps:
1. Activate RDL. This may be done in two ways:
Move the front-panel toggle switch Down to “Remote.”
Raise the RDL signal on the interface.
2. Perform a V.52 BER test as described in
Section 5.4
. If the BER test
equipment indicates a fault and the Local Line Loopback test was successful
for both Line Drivers, 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.
Local IDSL Line
Driver (ME0002A)
RDL initiated
Remote IDSL Line
Driver (ME0002A)
