UCS 5.1.1 introduced new features and functionality and as part of this the Web interface is no longer active when the phone is in LYNC base profile mode.
UC Software 5.5.0 or later disabled the functionality to have either HTTP alone or HTTP and HTTPS in combination and enforces the phone to utilize HTTPS only.
The Persistent Single Sign-On / PSSO policy does not allow unsecure HTTP and the httpd.cfg.secureTunnelEnabled="0" Parameter is therefore invalid
NOTE: Before activating this feature please ensure you change to factory default password as shown => here <=
In order to enable the HTTP or HTTPS Web Interface on the phone please go ahead as follows:
Simply provision the feature from the provisioning server:
<PHONE_LOCAL httpd.cfg.enabled="1" httpd.cfg.secureTunnelRequired="0" httpd.enabled="1" />
Enable the Web Interface for Poly CCX phones in Teams mode: