ABTO SIP Server - Version 1.0 ABTO SIP Server supports making calls over Internet and defines the way of handling of interactive voice, video and IM sessions.Main features:* implementation of the relevant standards from the SIP working groups;* support for multiple transport protocols (both IPv4 and IPv6);* security mechanisms (with the newest SIP Security IETF efforts);* simple user management through an embedded configuration web server;* use of readily available databases.