Do Cisco IP Phones support ZRTP?

[mrzcn]

Hello,

A potential customer stated that he needs an IP Phone with ZRTP support. As far as I can see, this feature is only specified in the Datasheet of Htek IP Phones. I could not find this information in the documentation of Cisco or other popular brands.
Does Cisco support this feature?

[Roger Kallberg]

I believe that this post still applies for this. https://community.cisco.com/t5/other-collaboration-subjects/cucm-sdes-mikey-or-zrtp/td-p/2455703