(Of course, if only the ring function is absent and you can hear good voice from the base unit to the portable unit, only the ringer ... If you are using an analyzer, connect the probe output to measure the a-c signal level on the LEVEL meter.
|Title||:||Complete Guide to Telephone Equipment Troubleshooting and Repair|
|Author||:||John D. Lenk|
|Publisher||:||Prentice Hall - 1986-08-01|