IMSDroid 介绍
IMSDroid 是 Android 上的一个高质量的视频
SIP/IMS 客户端。值得关注的特性：
-
SIP(RFC 3261, 3GPP TS 24.229 Rel-9)
-
TCP and UDP over IPv4 or IPv6
-
Signaling Compression, SigComp(RFC 3320, 3485, 4077, 4464, 4465, 4896, 5049, 5112 and 1951)
-
Enhanced Address Book (XCAP storage, authorizations, presence, …)
-
Partial supports for GSMA Rich Communication Suite release 3
-
Partial supports for One Voice Profile V1.0.0 (GSMA VoLTE)
-
Partial supports for MMTel UNI (used by GSMA RCS and GSMA VoLTE)
-
IMS-AKA registration (both AKA-v1 and AKA-v2), Digest MD5, Basic
-
3GPP Early IMS Security (3GPP TS 33.978)
-
Proxy-CSCF discovery using DNS NAPTR+SRV
-
Private extension headers for 3GPP
-
Service Route discovery
-
Subscription to reg event package (Honoring network initiated (re/de/un)-registration events)
-
3GPP SMS Over IP (3GPP TS 23.038, 24.040, 24.011, 24.341 and 24.451)
-
Voice Call (G729AB1, AMR-NB, iLBC, GSM, PCMA, PCMU, Speex-NB)
-
Video Call (VP8, H264, MP4V-ES, Theora, H.263, H.263-1998, H.261)
-
DTMF (RFC 4733)
-
QoS negotiation using Preconditions (RFC 3312, 4032 and 5027)
-
SIP Session Timers (RFC 4028)
-
Provisional Response Acknowledgments (PRACK)
-
Communication Hold (3GPP TS 24.610)
-
Message Waiting Indication (3GPP TS 24.606)
-
Calling E.164 numbers by using ENUM protocol (RFC 3761)
-
NAT Traversal using STUN2 (RFC 5389) with possibilities to automatically discover the server by using DNS SRV (TURN already implemented and ICE is under tests)
