Caller cannot hear me when I am on speaker
AT&T Model CLP99387
When using any of the handsets (have 7), the communications changes to Simplex when I use the Speaker on my end. I can hear them, but I cannot interrupt them when they are talking. If they stop talking and I begin, they can hear me, but I cannot hear them as long as I am talking.
If we use the phone handsets without speaker, they seem to work ok, but the volume of the ear speaker is not very loud. Both my wife and I are slightly hearing impaired and that is why we need to use the speaker most of the time.