I have one of those AT&T cordless phone systems where the base unit plugs into a magic jack. There is a cordless handset on the base and two remote units. The base unit provides Voice Mail. Over the past few months, I have had a problem that is getting worse. MagicJack support is no help and AT&T support is non-existent. When someone calls and gets my voicemail, then they hang up, the speaker on the phone starts blasting a loud squawking sound that is sort of like a busy signal. This used to happen occasionally and would stop after a few seconds. Now it happens almost all the time and lasts a really long time. If I am not there to stop it, it fills up my voice mailbox. I am trying to decide whether to replace the phone or the magic jack first. Any suggestions?