Testing Wiring - ZyXEL Communications IES-5000 Series User Manual

Table 11 Voice Troubleshooting
STEP
3
4
5
6
7

4.3.4 Testing Wiring

Use the following tests if there is no voice.
Systematically test wiring using a functioning telephone to determine if there is a wiring
problem. If the connection is good, the telephone will return a dial tone. Letters in the figure
shown next indicate the systematic tests to be done. Suppose you're using installation scenario
"B" as shown in the chapter on MDF connections. The logic for other scenarios should be
similar.
Use steps A-D if there is no voice but you can transmit data. Use all of the steps if there is no
voice and you cannot transmit data.
Chapter 4 Maintenance and Troubleshooting
CORRECTIVE ACTION
Check the telephone wire and connections between the MDF(s) and USER port(s). Refer
to the pin assignments in the line card User's Guide.
Check the telephone wire and connections between the MDF(s) and the CO port(s). Check
the telephone wire mapping on the MDF(s).
Check the connection from the MDF(s) to the PBX or the telephone company PSTN or
ISDN switch.
Make sure the in-house wiring works and is connected properly.
Repeat the steps above using a different DSL port.
IES-5000 Series User's Guide
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