非常遗憾的是，OpenMeetings没有提供基于第三方SSO（单点登录，例如CAS）系统的集成方法。但它提供了一个Web Service，官网将其命名为SOAP-Gateway，亦即一个基于SOAP的网关。这个Gateway集成了一系列的方法，可以实现从OpenMeetings的Flash客户端（前台）之外完成登录、进入房间、以及部分后台管理（如添加房间、注册新用户等）功能。
Very unfortunately, OpenMeetings none provided based on third party SSO (single sign-on, such as CAS) system integration approach. But it provides a Web Service, the official website will be named SOAP-Gateway, which is a SOAP-based gateway. The Gateway integrates a series of methods that can be achieved from OpenMeetings the Flash client (foreground) login is done outside, into the room, as well as some background management (such as adding a room, registration of new users, etc.) functions. (2013-09-15, Windows_Unix, 690KB, 下载8次)
对SIP协议进行了系统的介绍，能使你对SIP协议的通信流程有一个大概的了解。
The introduction of the SIP protocol. (2013-03-27, Windows_Unix, 4323KB, 下载3次)
yate是一个软交换的sip电话。也是一个voip服务器或客户端。
主要支持功能：
VoIP 服务器 VoIP 客户端
VoIP to PSTN 网关 PC2Phone and Phone2PC 网关
H.323 网守
H.323 多端点服务器
H.323<->SIP 转换代理
SIP session border controller
SIP 路由 S
IP 注册服务
Jingle 即时聊天 I
SDN passive and active recorder
IAX2服务器客户端
电话服务器和客户端
呼叫中心服务器 (会议，队列)
IVR语音交互应答
预付费，后付费电话卡系统
兼容Asteirsk的zaptel中继卡
支持linux /windows
Yate is a next-generation telephony engine while currently focused on Voice over Internet Protocol (VoIP) and PSTN, its power lies in its ability to be easily extended. Voice, video, data and instant messaging can all be unified under Yate s flexible routing engine, maximizing communications efficiency and minimizing infrastructure costs for businesses. (2009-08-13, Windows_Unix, 1962KB, 下载249次)
Jrtplib库，附件版本3.3.0。实现RTP/RTCP协议，用于音频、视频网频传输。开发VOIP的朋友可以参考。
Jrtplib library annex version 3.3.0. Achieving RTP/RTCP for audio, video frequency transmission network. Development of VoIP friends reference. (2005-12-10, Windows_Unix, 546KB, 下载134次)