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Chapter 3 Hardware Troubleshooting
IES-5106M / IES-5112M / IES-6000M User’s Guide
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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.
Figure 53 Testing In-house Wiring
Table 5 Testing In-house Wiring
STEP TEST
A Wiring problem between the CO and MDF 1.
Connect a standard telephone to MDF 1. If there is no dial tone, then a problem
with the wire or wire connections between MDF 1 and the CO exists. Contact your
telephone company for troubleshooting.
B Wiring problem between MDF 1 and MDF 2.
Connect a telephone to the upper port of MDF 2. If there is no dial tone, then the
problem is between MDF 1 and MDF 2. Check the telephone wire and connections
between MDFs 1 and 2.