NEC Electra Elite IPK II System Hardware Manual page 620

Document Revision 3
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Multiline Terminal off-Hook
Ground all unused
pairs at MDF.
RFI Cleared?
Yes
End
Follow the steps below, one at a time, and test after each step.
1. Place a 0.01 microfarad ceramic capacitor (0.001 microfarad for FM Interference)
across receiver and transmitter elements in the Multiline Terminal handset.
2. Add a 0.01 microfarad ceramic capacitor from one transmit lead to one receive lead.
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14 - 8
B1
Radio Frequency Interference (RFI)
Is interference only on outside calls
or anytime station is off-hook?
RFI Event?
Check cable for the
affected terminal(s).
More than 1-pair
Twisted
Twisted
pair?
No
On CO calls only
No
Cable with 1-pair twisted
pair cable.
No
RFI Cleared?
Yes
End
Electra Elite IPK II
Remove one CO line
at MDF and test using
standard SLT.
No
RFI on CO
Lines?
Yes
Inform
Telco.
System Maintenance