IES-5000 Series User’s Guide
54 Chapter 4 Maintenance and Troubleshooting
Figure 30 Testing In-house Wiring
Table 12 Testing 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.
C Wiring problem between MDF 2 and the USER Telco-50 connector on the IES-5000
splitter chassis.
Disconnect the Telco-50 cable from the IES-5000 splitter chassis’ Telco-50 CO connector.
Connect a telephone to the appropriate pins of the Telco-50 cable’s Telco-50 connector.
If there is no dial tone, then the problem is between the IES-5000 splitter chassis Telco-50 CO
connector and MDF 2.
Check the Telco-50 cable’s pin assignments (refer to the line card User’s Guide for the proper
pin assignments). Replace the Telco-50 cable if the pin assignments are okay and there is still
no dial tone.
