We are also having the echo problem. We have a Panasonic KX- TGA0600B cordless. I will try powering down the unit to see if that helps as described in previous posts.
The echo has been identified as a network issue and I'm still waiting for the fix after 2 wks. I'm about to pull the plug because no one wants to talk to me. Plus I'm having other issues like Voicemail says there are 3 saved messages but I can only listen 2 one.
Did you happen to port your land line phone number to the Sprint Phone Connect?
why cant i use a phone card???? it will go through but when i put the pin it aint working.... i use my neighbor house phone (notsprint) it works perfectly!!! Sprint u guys should atleast let us use a phone card to call international!
I'm having the same problem (as well as others on this discussion). I noticed many saying they have a Panasonic wireless handset, including me. I switched out the Panasonic wireless with a Sony "hardwired" handset. THE ECHO WENT AWAY. I tested this several times with a Net 10 cell phone, it worked. I also have an At&T cell. It experienced the echo but not as severely, but even this mild echo went away when I switched the Panasonic with the Sony. It may be that the difference is wireless vs hardwired handset that makes the difference, not necessarily Panasonic vs Sony. Sprint service - please try this and confirm. Would appreciate it.
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