/mcpThe Search SIP Security Profiles page displays the currently configured SIP security profiles. Step 2 Configure a SIP security profile (For information, see Help> This Page): • To add a SIP security profile: On the Search SIP Security Profiles page, select Add New. On the New SIP Security Profile page, in the Port field, enter the port number that the Cisco Unified CM server uses for SIP trunk authentication and encryption of the voice messaging ports. To encrypt the call signaling messages, check the Do TLS check box and select Save. • To edit a SIP security profile: On the Search SIP Security Profiles page, select the name of the SIP security profile that you want to edit. On the Edit SIP Security Profile page, enter the applicable settings and select Save. • To delete a SIP security profile: On the Search SIP Security Profiles page, check the check box next to the display name of the SIP security profile that you want to delete. Select Delete Selected and then select OK. IPv6 in Unity Connection (Cisco Unified Communications Manager Integrations Only) Unity Connection supports IPv6 addressing with Cisco Unified Communications Manager phone system integrations using SCCP or SIP: • IPv6 support is disabled by default. When you enable IPv6, you can configure Unity Connection to obtain an IPv6 address either through router advertisement, through DHCP, or by manually configuring an address. You can also configure the mode in which Unity Connection listens for incoming traffic—IPv4, IPv6, or both IPv4 and IPv6. • For SCCP integrations with Cisco Unified CM, if Unity Connection is configured to listen for the incoming IPv4 and IPv6 traffic, you can configure the addressing mode that Unity Connection uses for call control signaling for each port group to use either IPv4 or IPv6. (This mode is also used when connecting to a TFTP server.) • For SIP integrations with Cisco Unified CM, if Unity Connection is configured to listen for the incoming IPv4 and IPv6 traffic, you can configure the addressing mode that Unity Connection uses for call control signaling for each port group to use either IPv4 or IPv6. (This mode is also used when connecting to a TFTP server.) In addition, you can configure the addressing mode that Unity Connection uses for media for each port group to use either IPv4 or IPv6. For instructions on enabling and configuring IPv6 for an existing Cisco Unified CM integration, see the “Upgrading Cisco Unity Connection” chapter in Install, Upgrade, and Maintenance Guide for Cisco Unity Connection, Release 15, available at https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/15/ install_upgrade/guide/b_15cuciumg.html. System Administration Guide 80 Telephony Integration IPv6 in Unity Connection (Cisco Unified Communications Manager Integrations Only)