Echo on DECT6 phone

[liorsyncro]

I need help because I really don't know what to do any more. I just bought a Panasonic DECT 6.0 cordless phone for my home office last week. Turns out I constantly hear echo on the other line. It's like I'm talking into a mic or something when I use the phone to make a call.

I already exchanged it with another one at Panasonic's request. But now, the second one is doing the same thing.

When I called Panasonic they said that sometimes you need to set the Line Mode inside the phone manually. By default, it is set to Line B. However, if it causes any interference, they suggest switching it Line A.

Well, I've been going back and forth and it's the same **** with both lines. This phone is operating on my Rogers business line. The rest of the phones are connected to the Bell residential line. No problems with the Bell lines and I really don't know what to do.

[saltyvinegar]

Are those the Panasonic DECT 6.0 that were on sale at Canadian Tire recently? I ask because I bought that set with 2 handsets and they work flawlessly and the quality is good, clear and no static. Are you using this handset over VOIP? If you try this handset on Bell it's fine but on Rogers you get the echo? If so then it's the Rogers line. Mine run on Bell and I have not changed any Line settings yet.
I do have a wireless network and have had no interference with my router on channel 1-3.