Yealink TCP please

[dandenson]

I need TCP for Yealink phones.

After troubleshooting a problem with one way audio and comparing pcaps on two ends of a VPN tunnel, I've found that an idle VPN tunnel takes a few packets to warm up and in that some of the packets can be lost especially if one of tunnels is over a cellular connection (ei, backup path). When this happens, one way audio.

The simple solution to this is TCP. I've manually set a couple phones to TCP and have no been able to reproduce the one way audio.

I put this in the ideas:
https://www.3cx.com/community/threads/yealink-tcp-setting-needed-desperately.62111/


REALLY need this feature and really don't want to be running custom templates.

 

[cobaltit]

Needs to go in the ideas thread (and will probably die there). That being said I know they are working on SIP-TLS but I don't think that's going to make it into v16 so you are looking at a custom template if you want that now.