ccme 8.5 6921 phone echo

[eric.ling]

I got CCME 8.5 . When I have call using 6921 and speakphone, the other side hear the echo when talked, both internal and outbound call. Try upgrade the newest firmware, no use. Try to use the cisco 7942, work fine. Take 6921 register to CM, work fine. If there any solution?

[Karthik Sivaram]

the echo and double talk in the speaker mode of 6921 is  generally seen due to CSCtf96182 and CSCtg62458.

Hope this helps!

Thanks,

Karthik

[Udit Mehrotra]

Try upgrading the firmware for the phone to the latest release and see if issue persists.

--

Udit

[eric.ling]

TRY TO UPGRADE 9.2 FIRMWARE ,  echo has been resolved by half speakphone, I don't think it's a best solution and the voice quality is too bad.

( both internal and outgoing call), any suggestion?