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Chapter 55 Troubleshooting
IES-612-51A User’s Guide
410
Figure 294 Testing In-house Wiring
E. Test E determines if there is a wiring problem between your device and MDF 3.
F. Test F determines if there is a building-wiring problem between the subscriber’s wall jack
and MDF 3.
Table 106 Testing In-house Wiring
STEP TEST
A 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 TELCO exists. Contact your telephone
company for troubleshooting.
B 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.
C Disconnect the telephone wire from CO. Connect a telephone to the telephone wire.
If there is no dial tone, then the problem is between your device and MDF 2.
Check the telephone wire’s pin assignments (see Section 56.5 on page 425 for the
proper pin assignments). Replace the telephone wire if the pin assignments are OK and
there is still no dial tone.
D Reconnect the telephone wire to CO.
Disconnect the telephone wire from USER. Connect a telephone to USER (see Section
56.5 on page 425 for the proper pin assignments).
If there is no dial tone, your device’s internal splitter may be faulty, contact your vendor.
Table 105 Wiring Tests
TEST DESCRIPTION