Configuring The B2Bua For Media Encryption - Cisco TelePresence Administrator's Manual

Zones and neighbors
Configuring media encryption policy

Configuring the B2BUA for media encryption

The B2BUA used for encryption (and ICE support) is a different instance to the B2BUA used for Microsoft
Lync integration. Whereas the Lync B2BUA has to be manually configured and enabled, the B2BUA used for
encryption is automatically enabled whenever an encryption policy is applied.
Cisco VCS Administrator Guide (X8.1.1) Page 136 of 507