voice loopback - echo

[Flora_Yealink]

Hi Angelo ,
Do you mean the scenario is like below,
T28 using openvpn feature
T28 are in a call with another party B
T28 using speaker , during talking or when press Mute /unmute , you can hear your own voice after 0.006mseconds, for example you say " hi " then after 0.006mseconds , you can hear your own voice "hi" again ?
Please help check below information :
1) if you using the handset instead of the speaker, can you hear the echo again ?
2) if another party B mute himself, then T28 press Mute /ummute again , will the issue still exist ?
3) How often the issue happen ? every single call ?
4) please help check whether you have used the latest version , it is 2.73.0.50 , if not , please help upgrade to the 50 version to see if it can fix the issue.
You can download the version from below link,
http://support.yealink.com/attachmentDow...3.0.50.zip
5)Did the issue only happen when using the VPN feature ?
6）If the issue still exist in the latest version , please provide us level 6 syslog, config.bin file and pcap trace .
You can refer to below link for how to catch these information.
http://forum.yealink.com/forum/showthread.php?tid=1319
Best Regards!
Flora