VoIP foreigin专家库，你可以用jrtplib做一些研究

SIP(rfc2543)详细讲解SIP协议-SIP (rfc2543) explain in detail the SIP protocol

2.0说明 1.0支持系统的录音多种格式,有一定的延时,没有过滤杂音功能. 2.0已取消支持系统的录音多种格式,使用PCM采集数据G711A压缩格式(8000HZ单声道16位格式录音每秒以8K完成数据,16000HZ单声道16位格式录音每秒以11K完成数据,音质相当好),延时降低到最小100-500MS以内,不会随时间增加而增加延时(如果是说话测试一直保持200MS的延时,如果是用播放歌曲来测试,有自动校正延时功能,恢复成200MS的延时,恢复过程中不会中断歌曲的播放,只是小小加快唱歌的速度,听觉不会觉察出来),加入了过滤杂音功能. 2.0安装 将ACMG711.dll复制到系统文件夹里 再安装控件 -2.0 1.0 Note recording system to support multiple formats, a certain delay, no noise filtering function. 2.0 support system has been abolished recording formats, the use of PCM data acquisition G711A compression format (8000HZ 16 mono recording format to 8K per second complete data 16000HZ mono recording format 16 to 11K per second complete data quality is very good), Delay reduced to the minimum 100-500MS within not with time delay increases (if word has been tested 200MS delay, If it is used to test play the songs, the automatic correction function of delay, 200MS resume into the delay, the recovery process will not be interrupted play songs, singing just a small speed up

sip관 련 소 스 인 데 많 이 참 조 하 여 주 세 요 -sip관 련 소 스 인 데 많 이 참 조 하 여 주 세 요

流媒体协议RTP/RTCP的C语言实现，可用于开发流媒体类程序。-streaming media agreement RTP/RTCP the C language, which could be used in the development process stream media category.

一款最为经典的SIP-one of the most classic SIP

IP电视电话会议+VC源码，非常好的IP电话会议的学习代码-IP video and telephone conference on+ VC source, very good IP telephone conference learning code

一个音频编码库，支持多种音频编码方法 可以用于VoIP-an audio coding the support of a variety of audio coding method can be used for VoIP

H.225 video-telephone protocol,specification document,for reference only

RADVISION RTP源代码-RADVISION RTP source code

这是H.263视频编码和解码的VC源代码，绝对使用！-This is the H.263 video encoding and decoding of VC source code, the absolute use!