/mcpStep 8 Complete the remaining fields of the Universal Device Template Configuration window. For help with the fields and their configuration, see the online help. Step 9 Click Save. Include the Universal Device template in an LDAP directory synchronization. For details on how to set up an LDAP Directory sync, see the “Configure End Users” part of the System Configuration Guide for Cisco Unified Communications Manager. TLS Interactions and Restrictions This chapter provides information about the TLS Interactions and Restrictions. TLS Interactions Table 33: TLS Interactions Interaction Feature You can enable Common Criteria mode along with configuration of minimum TLS version. If you do so, the applications continue to comply with Common Criteria requirements and disable TLS 1.0 secure connections at application level. When the common criteria mode is enabled, you can configure the minimum TLS version as either 1.1 or 1.2 for the applications. For details on Common Criteria mode, see the 'Compliance to Common Criteria' topic of the Command Line Interface Reference Guide for Cisco Unified Communications Solutions. Common Criteria mode TLS Restrictions The following table highlights issues that you may run into when implementing Transport Layer Security (TLS) version 1.2 on legacy phones, such as 79xx, 69xx, 89xx, 99xx, 39xx, and IP Communicator. To verify whether your phone supports secure mode in this release, see the Phone Feature List Report in Cisco Unified Reporting. The feature restrictions on legacy phones and the workaround to implement the feature is listed in the following table: The workarounds are designed to get the impacted feature functioning in your system. However, they do not guarantee TLS 1.2 compliance for that feature. Note Table 34: Transport Layer Security Version 1.2 Restrictions Restriction Feature Legacy phones in Encrypted Mode do not work. There is no workaround. Legacy phones in Encrypted Mode Legacy phones in Authenticated Mode do not work. There is no workaround. Legacy phones in Authenticated Mode Security Guide for Cisco Unified Communications Manager, Release 15 and SUs 201 Basic System Security TLS Interactions and Restrictions