Registration Group Options

Use this page to select the DNS cache option and a custom certificate authority for managed IP phones.

Use Polycom Static DNS Cache

Select this check box to use cache file's preloaded resource information which is obtain when the DNS service is started.

Certificate Authority

Select the certificate from the pull-down list to use for managed IP phones for this registration group.

Note: You must first import the certificate authority in Certificate Authorities. This option is available only if the registration transport protocol is TLS, which requires the Advanced Security Feature license.