This is a list of major new features in Enswitch 3.3. It is not an exhaustive list; minor enhancements are too many to list. A full list of features is also available.

• Asterisk 1.6.2 support.
• Many new features for tax handling.
• Many new features for voicemail, including distribution lists, RDNIS based voicemail, and more options for notification.
• New features for the bulk dialer, including time-based activation and reuse of destinations.
• Telephone menu to allow control of telephones' forwarding from the PSTN.
• Support for clients registered on third party registrar, such as an IAX server.
• The ability to quickly configure a rate plan or customer to send all calls to one peer.
• More control over callerid sent to peers.
• More control over location callerid for emergency calls.
• The AJAX control panel can now be read-only and in its own pop-up window.
• Per telephone control of SIP OPTIONS ping to NAT telephones.
• Automatic failover can be triggered when MySQL is up but giving incorrect responses to SQL queries.
• Support for SQL logging to Asterisk console for easier debugging.