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T58a and Akuvox doorbelll

J. Klein

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Hi everyone, 

Do I have to say more? Akuvox... Yah, the R26C with my T58a are not behaving. 

When the doorbell rings the T58 displays a black place holder for the video, but the video stream is not visible until the call is answered 

looking at the sip capture, the Akuvox video stream is there , its the t58 which is not displaying it at the ringing stage.


Yealink has a new ROM (up from 58.84)
When upgrading, Kazoo will "downgrade it back to the older firmware.

So, I deleted the 58 in Kazoo, did a factory reset, upgraded the firmware, and added the 58 as a SIP device on Kazoo NOT by selecting from the device list. then placed the sip credentials in the 58 and manually registered it.    Just like I did with the Akuvox.

I tested again and same results. 

Any ideas?!

See video attached. 

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