Customer Review(s)
Customer Rating: 



Summary: Hum with headset on AT&T Corded 2-line speakerphone
Comment: I just obtained my AT&T Corded 2-Line Speakerphone.
Initial problem I have is when using my headset, I hear a hum. If I put the phone on mute, the hum goes away.
I only have 1 line connected.
Anybody have any thoughts ?
Customer Rating: 



Summary: Hum on the phone; Customer Support not so hot
Comment: As another purchaser said and retracted, I also had a hum on the phone when BOTH lines (copper and VOIP) were plugged into the phone. When either line was plugged into the phone individually, it sounded fine. The 993 has a great feature set for the most part. My biggest complaint other than the hum is that the volume control does not seem to control the headset jack.
I called AT&T customer service about the humming and, after, many questions from a script, I was told to change the channel on my router as that was probably interfering with my CORDED telephone. The change had no effect which is what I expected but I wanted to give the "tech support" folks a chance.
I would not recommend this phone to users having VOIP/copper wanting 2-line service. I will be returning it to Amazon and look for a Panasonic locally.