资料介绍来源
http://www.cnblogs.com/dreamsea-for-jimmy/archive/2011/07/28/2119877.html
Doubango框架是3GPP IMS(多媒体子系统(移动业务))的一种实现，目前IMS已被3GPP国际组织标准化，IMS所支持的服务将能在任一种网络中实现,这些网络包括3GP LTE(4G), GPRS, WLAN, CDMA2000 等已经公用的通信网络协议
项目地址：
http://code.google.com/p/doubango/
相关项目
【Client-side components】
Boghe
IMS/RCS Client for Windows
IMSDroid
SIP/IMS Client for Android
iDoubs
SIP/IMS VideoPhone for iOS (iPhone, iPad and iPod Touch) and MAC OS X
［http://code.google.com/p/idoubs/］
【Server-side components】
webrtc2sip
Smart SIP and Media Gateway to connect WebRTC endpoints to any SIP-legacy network
OpenVCS
OpenVCS stands for Open Source Video Conferencing Server and is used to manage Multipoint Control Units (MCU). Each MCU (a.k.a Bridge) can handle up to 64 participants.
Flash2IMS
Adobe® Flash® to SIP/IMS Gateway.
【Features】
SIP (RFC 3261, 3GPP TS 24.229 Rel-9)
IMS-AKA (RFC 3310, 3GPP TS 33.203, 35.205, 35.206, 35.207, 35.208 and 35.909)
Private extension headers for 3GPP
IPv4/IPv6 dual stack
UDP, TCP and TLS
Service-Route Discovery (RFC 3608)
Proxy-CSCF discovery using DHCPv4/v6 or/and DNS NAPTR
SigComp (RFC 3320, 3485, 4077, 4464, 4465, 4896, 5049, 5112 and 1951)
IPSec
Security Agreement (RFC 3329)
NAT Traversal (STUN, TURN and ICE)
Preconditions (RFC 3312, 4032 and 5027)
SMS over IP (3GPP TS 23.038, 24.040, 24.011, 24.341 and 24.451)
ENUM (RFC 3761)
The tel URI for Telephone Numbers (RFC 3966)
SIP SIMPLE (Presence Subscription/Publication and Pager Mode IM)
MMTel (UNI)
SDP (RFC 3264)
(S)RTP and (S)RTCP
(S)AVP and (S)AVPF profiles
XCAP (RFC 4825)
MSRP (RFC 4975 and 5547)
Audio/Video (AMR, Speex, G.729, G.711, GSM, iLBC, VP8, H.264, H.263, Theora, MP4V-ES...)
Full HD (1080p) video
T.140: Text Over IP (http://en.wikipedia.org/wiki/Text_over_IP)
...and many other features