DO NOT UPGRADE TANJAY/ CX700 TO THE LATEST FIRMWARE 4397/4411.
Your lync phone will be partially not able signing in with Lync 2013
more info an fix will be provided soon
As I promised, here it come...
The bug is related to some undocumented processes for the so called old OCS Phone, which are the Tanjay/ cx700.
this login process and firmware update process is totally different from other Lync phones.
What do I have to do:
Update the phone to the newest firmware, but be aware, the phone holds the version before 4397.
LYNC environment:Phone Login:
- the OCS Phone Edt, will NOT login via sip.<domain fqdn>, it will only us the sipinternal.<domain fqdn>.
Therefore ensure, the SIPINTERNAL FQDN is on the local certificate.
Our findings have shown, Tanjay will still query the sip.<domain fqdn>, will also make an TLS connection, but than it drops the…