SIP Stack : Fusion Embedded Session Initiation Protocol

Fusion Embedded™ SIP Stack
Embedded Session Initiation Protocol (SIP) Software Stack

The Fusion Embedded™ SIP stack is at the heart of Unicoi's Voice over Internet Protocol (VoIP) offering. Fusion Embedded SIP software stack is a lightweight, transport-independent, text-based protocol suite designed for use in IP media phones, VoIP gateways, and other IP-enabled products.

Fusion Embedded SIP stack source code is specifically designed for use in embedded devices, has a small footprint, and is completely ROMable and re-entrant. The Fusion Embedded SIP stack provides a simplified API for easy integration with the application and transport stack (TCP/IP/UDP).

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Fusion Embedded 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 stack source code
Secure SIP (SIPS) optional

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 3842 (Message Summary and Message Waiting)
RFC 3891 (The Session Initiation Protocol (SIP) Replaces Header)
RFC 3892 (The Session Initiation Protocol (SIP) Referred-By Mechanism)
RFC 3959 (Sender & Receiver Tables for Session Members)

Call or email for a complete list of RFCs.

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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