Support is now available for secure SIP, also known as SIPS.  SIPS allows the device to make a secure connection to a server so that all communications can be encrypted.  When adding a user that desires to use SIPS, a SIPS based address is required: sips:user@domain.com.  SIPS requires the Fusion Net Manager, which comes free of charge, and SSL/TLS. Unicoi can supply SSL/TLS as a separate product.

Full support for TCP has also be implemented.  Previously, the Fusion SIP stack was able to receive TCP packets, and if a message was to big for a single packet, the SIP stack would use TCP to send that message.  Now the SIP stack can be forced to send using TCP by attaching the transport type to the destination address: sip:user@domain.com;transport=tcp.  This does not mean all communications will use TCP as the peer may use UDP to reply.

Other

This release of Fusion SIP was tested against the Protos test suite and passed all 4000+ cases.  The Protos test suite focuses on the parsing of INVITE messages and verifies that the device can parse correctly the many different permutations of invalid SIP header fields.