Yealink Forums

I have four phones all previous sw version same provisioning server all register with asterisk ok. Upgraded one to 7.70.23.2 and it is odd. Asterisk thinks it has registered ok, but phone says register fail and also says network unavailable. Phone returns busy when try and send call to it.

Suggestions?

Hi Tim,
What's your previous firmware version?
You can upgrade to 7.70.0.140 in our website to check agian.
http://www.yealink.com/Upload/firmware/T....0.140.zip
Thanks.