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Fixing Telephone Problems
If you change the jack assignment of any telephone, be sure to record the
extension jack change
on Form 2a, System Numbering: Extension Jacks. See
Appendix B, “System Numbering Forms,” for details.
Fixing Telephone Problems
If a reported telephone problem matches any symptom described in Table
3–1, refer to the proper section of this chapter.
Table 3–1. Troubleshooting Telephone Problems
Symptom Section
Intermittent telephone problems General Telephone and Wiring Problems
Analog multiline telephone LEDs and/or
Analog Multiline Telephone Problems
ringing tones do not work properly.
Time appears on display of an analog
Analog Multiline Telephone Problems
multiline telephone, but incoming call
information does not appear.
Telephone does not receive tones from the Voice Transmission Problems
control unit.
Several single-line telephones cannot dial Single-Line Telephone Problems
directly, even though they are receiving
calls.
Users cannot make outside calls on single-
Single-Line Telephone Problems
line, touch-tone telephones.
Users are getting other people’s calls. Call Forwarding Problems
General Telephone and Wiring Problems
If intermittent telephone trouble occurs, use the following steps as a guideline
to check for general telephone and wiring troubles.
3–2 Telephone Problems