The Fusion Session
Initiation Protocol (SIP) software suite is
at the heart of Unicoi's Voice over Internet
Packet (VoIP) offerings. Fusion
SIP is a lightweight, transport-independent,
text-based protocol designed for use in IP Phones, VoIP
Gateways, and other IP-enabled products.
Fusion SIP source code is specifically
designed for use in embedded devices, has a small footprint
and is completely ROMable and re-entrant. The Fusion
SIP stack provides a simplified API for easy
integration with the application and transport stack
(TCP/IP/UDP).
Fusion SIP Stack Features
- Supports TCP and UDP
- Supports proxy and redirect servers
- Supports call hold, call waiting,
call transfer, call forward, etc.
- SIP Message Generator: INVITE, ACK,
BYE, OPTIONS, CANCEL, REGISTER, NOTIFY, SUBSCRIBE,
INFO, and REFER
- SDP message generators
- User Agent Client and Server
- Timer manager
- SIP/SDP message parsers
- Configurable parameters for default
SIP and RTP port numbers
- Presence
- Instant Messaging
- NAT Traversal
- IPV6
- Packetization parameters for controlling
re-transmissions, number of connections, etc.
- Interfaces for PSTN/PBX system
- SIP response generator
- 100% ANSI C compliant SIP source code
RFC Compliance
- RFC 2617 (Basic and Digest Authentication)
- RFC 2976 (Info Method)
- RFC 3261 (SIP Version 2)
- RFC 3262 (Reliability of Provisional
Responses in SIP)
- RFC 3263 (Locating SIP Servers)
- RFC 3265 (Specific Event Notification)
- RFC 3420 (Internet Media Type message/sipfrag)
- RFC 3515 (Refer method)
- RFC 3959 (Sender & Receiver Tables for Session Members)
- RFC 3891 (The Session Initiation Protocol (SIP) Replaces Header)
- RFC 3892 (The Session Initiation Protocol (SIP) Referred-By Mechanism)
IM & Presence
- RFC 2778 (A Model for Presence
and Instant Messaging)
- RFC 3428 (Extensions for instant
messaging)
- RFC 3856 (A presence Event Package
for SIP)
- RFC 3857 (A Watcher Information Event Template
Package for SIP)
- RFC 3858 (XML Based Format for Watcher
information)
- RFC 3863 (A Presence information data format
PIDF)
Media & RTP/RTCP
- RFC 1889 (RTP)
- RFC 1890 (RTCP)
- RFC 2327 (Session Description
Protocol SDP)
- RFC 2508 (RTP Header Compression)
- RFC 3264 (Offer/Answer Model with
SDP)
- RFC 3550 (RTP)
- RFC 3551 (RTCP)
- RFC 2833 (Out of Band DTMF Tones)
The Fusion SIP stack is a component of the Fusion
Voice Gateway (VoIP) solution. Below are links to
the other Fusion modules that, together, comprise
the Fusion VoIP solution.
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