06-07-2010 08:54 AM - edited 03-15-2019 11:08 PM
I am running 7965GE phones on a UC520 system. Testing internal calls we ran into an odd problem. A few phones have a
"tunnel" type sound when talking with the handset. The problem is the incoming voice sounds like it is in a tunnel. The
problem phone sounds OK on the far end. Same phone using the speaker phone and incoming sound is fine.
Any ideas?
Thanks,
Diego
06-07-2010 10:51 AM
Are these IP to IP calls or what? Are you using a wideband codec such as G.722?
Hailey
06-07-2010 11:34 AM
Also what firmware version on the phone?
06-12-2010 05:00 AM
Finally got around to getting that firmware. Phones are 7965GE and firmware is sccp45.8-3-2s.bin.
Thanks for your help.
Diego
06-12-2010 06:12 AM
Try upgrading the firmware to 8.5(3) or 8.5(4). That version has issues; I have heard this complaint from other customers running 8.5(2).
06-12-2010 09:02 PM
Thanks Jonathan. I'll give it a shot.
Rgds,
Diego
06-07-2010 03:40 PM
These are IP/SCCP to IP/SCCP phones on our local LAN. Codec is G.711u. Will get firmware tomorrow when I get to the office.
Thanks,
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