Juphoon provides protocol software with industry quality guarantee and the related innovative products, and creates long term value for customers realizing their potential growth.

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Juphoon SIP Complies with RFCs

RFC 3261 Session Initiation Protocol
RFC 3262 Reliability of Provisional Response
RFC 3263 Locating SIP Servers
RFC 3264 An Offer-Answer Model with Session Description
RFC 3265 Specific Event Notification
RFC 3311 The SIP UPDATE method
RFC 3311 Private SIP Extensions for Media Authorization
RFC 3323 A Private mechanism for the SIP
RFC 3325 Private Extensions to the SIP for Asserted Identity within Trusted Networks
RFC 3326 The Reason Header
RFC 3329 Security Mechanism Agreement for the SIP
RFC 3372 SIP for Telephones (SIP-T): Context and Architectures
RFC 3428 Session Initiation Protocol (SIP) Extension for Instant Messaging
RFC 3515 The REFER method
RFC 2806 URLs for Telephone Calls
RFC 2976 The SIP INFO Method
RFC 3204 MIME media types for ISUP and QSIG Objects
RFC 3581 An Extension to the SIP for Symmetric Response Routing
RFC 3903 Session Initiation Protocol (SIP) Extension for Event State Publication
RFC 3911 The Session Initiation Protocol (SIP) "Join" Header
RFC 3455 Private Header (P-Header) Extensions to the Session Initiation Protocol (SIP) for the 3GPP
RFC 3327 SIP Extension Header Field for Registering Non-Adjacent Contacts
RFC 3608 SIP Extension Header Field for Service Route Discovery During Registration
RFC 2368 The mailto URL scheme
RFC 2327 Session Description Protocol
draft-ietf-sip-session-timer-14 The SIP Session Timer
draft-ietf-sip-events-01 SIP-Specific Event Notification
draft-ietf-sip-refer-01 The Refer Method
draft-ietf-sip-replaces The Session Initiation Protocol (SIP) "Replaces" Header
draft-ietf-sip-callerprefs Caller Preferences and Callee Capabilities for the Session Initiation Protocol (SIP)
draft-ietf-sip-privacy SIP Extensions for Network-Asserted Caller Identity and Privacy within Trusted Networks

Codec - Fast scan one ABNF codec (hand written parser); Over 86 headers explicit parsing; SIP, SIPS, TEL, IM, MAILTO, ABSO URI scheme; 3GPP \ IMS SIP services headers; Security mechanism headers; MIME body and multi-bodies; All parse of headers, and also can be controlled according to configuration table; Any extension of SIP methods and headers comply with the SIP ABNF; SDP message body.

SIP Process - INVITE Client/Server, non-INVITE Client/Server transactions; Early dialog, established dialog and multi dialog; Dialog forking; Auto complete message header; SIP messages classified and organized to primitives

Key Technologies - Resource statistics and powerful tracing, logging and error handling; Powerful ABNF parser; Powerful FSM mechanism; Resources (Dbuf, session, dialog, transaction etc.) dump control; Stable and excellent performance in data buffer control; Thread safe and simple communication; Multi-timer for applications in different scenes

Transport - NAT Traversal for SIP; UDP/TCP transport

Applications - Multi-upper users of multi-entities; Support User Agent, Proxy Server, Redirect Server, Registrar

Perfromance and Code Quality - Juphoon SIP was written in ANSI C language. Our SIP's codec efficiency 3 to 9 times higher than most of the third party protocol stacks. Our stack codes are totally 50,000 lines, and pure codes are 32,000 lines.