I installed an SL1100 6 phone system last year in a pizzeria. Recently an odd problem started. When a call is finished and the NEC extension is being hung up, as the handset gets about 6 inches from the base a fairly loud sound like speaker feedback starts. Both parties can hear it. It gets the loudest just before going on hook. This happens on every line and every extension.
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Feedback noise when going on hook
- Thread starter pmcook
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belevedere
Instructor
Try a system reset. It will take about 3-5 minutes to complete.
Is this on outside calls only or does it happen on intercom calls as well?
You may want to try 90-68 the trunk calibration just as a precaution.
For testing you could play with 82-14 (Handset gain and loss) or 14-01-03 and 14-01-03 (Trunk gain and loss)and see if any of those have an impact on the noise level.
Grounding the system if that hasn't been done would probably be a prudent step as well.
You may want to try 90-68 the trunk calibration just as a precaution.
For testing you could play with 82-14 (Handset gain and loss) or 14-01-03 and 14-01-03 (Trunk gain and loss)and see if any of those have an impact on the noise level.
Grounding the system if that hasn't been done would probably be a prudent step as well.
belevedere
Instructor
The trunk calibration procedure requires a system reset afterward.
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