Jitter buffer problem with yealink T-21P

[cabijuan]

Hello, I attached screenshots privately.

I've attached a screenshot on the phone Yealink T20 and its configuration (all hear perfect).

Also I attached a screenshot of yealink T21P made on the phone where evil and hear the same call also you shoot my proxy sip which is as it sounds perfect.

Obviously all for the same Internet

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I sent catches support@yealink.com because I can not attach a private message and function Yealink_James Send an email not working.

Thank you.