best Jitter and Echo values

[Yealink Support]

Hi Markus,
Thanks for your information .
So do you mean the scenario is like below ,
Yealink VP530 calls phone B, phone B answers the call, then you say "hello...", after 0.5 seconds you will hear the words you just said "hello..."again, right ?
Phone B calls VP530 ,Phone B says "Hello, this ..." then you only can hear the "this ..."but can't hear "Hello" , right ?
If the above scenarios is correct, could you please check if the firmware you use is the latest firmware , if not, please upgrade the firmware to the latest firmware 23.70.0.40 and test again?
You can download the firmware from Yealink web site, http://www.yealink.com/SupportDownloadfi...0&flag=142

If the lastest firmware still has this issue, could you please send the PCAP trace for investigating?
You can send the email to support@yealink.com

Best Regards!
Yealink Support Team