- http://www.smithonvoip.com/
- http://www.asteriskvoipnews.com/
- http://www.voip-weblog.com/
- http://www.advancedvoip.com/
- http://www.voipproviderslist.com/
- http://www.voiplowdown.com/
- http://www.voipservice.com/
- http://www.hackingvoip.com/
- http://www.mobilevoipreview.com/
- http://www.cliconnect.com/
- http://www.snom.com/
- http://www.voipplanet.com/
- http://www.voipservicedirectory.com/
- http://www.voipresource.net/
- http://www.c21communications.com/
- http://www.voiplogic.com/
- http://www.bandcalc.com/
- http://www.packetizer.com/
- http://www.voip-calculator.com/
- http://www.voiplobby.com/
- http://voipguides.blogspot.com/
- http://www.yealink.com/en/index.asp
- http://www.voiptalk.org/products/index.html
- http://www.voipcheap.com/en/index.html
- http://www.justvoip.com/en/index.html
- http://www.voipsupply.com/
- http://www.tmcnet.com/voip/
- http://www.voipwx.net/
- http://www.sipfoundry.org/
- http://www.antisip.com/as/
- http://www.kamailio.org
- http://yate.null.ro/pmwiki/
- http://www.iptel.org/ser/
- http://research.edm.uhasselt.be/~jori/page/index.php?n=CS.Jrtplib
- http://www.iptel.org/~sipsc/ SIP协议场景生成器
- http://www.cs.columbia.edu/sip/
- http://www.packetizer.com/ipmc/sip/
- http://phoenix.labri.fr/documentation/sip/
- http://www.sipstone.org/
- http://www.sipcenter.com/
- http://www.toyz.org/cgi-bin/sipwiki.cgi
- http://www.juphoon.com/
- http://www.networkworld.com/
- http://www.infoworld.com/
- http://www.cio.com/
- http://www.voipjet.com/
- http://www.chayden.net/
- http://www.pbxinfo.com/
- http://www.3cx.com/
- http://www.protocols.com/
- http://www.thinkbroadband.com/
- http://www.packetizer.com/
- http://freshmeat.net/
- http://www.voip365.org/
- http://www.microvoip.com/ 全球IP通信联盟
- http://www.chinacie.com.cn/ 中国通信器材网
- http://www.tele.com.cn/ 通讯世界
- http://www.voip86.net/ VOIP商情网
- http://www.vlan9.com/ Cisco及华为网络技术
- http://www.openvoip.cn/ 网络通信服务网
- http://www.ip1688.com/ 天源VOIP信息网
- http://www.elecfans.com/ 电子发烧友
- http://www.chinavoipnet.com/ 中国VOIP网
- http://www.voipyeah.com/ 网话易
- http://www.21ctn.com/ 通信机世界
- http://www.tele.com.cn/ 通讯世界
- http://www.tongxin123.com/ 通信网址大全
- http://www.ctm.com.cn/ 通信市场
- http://www.226e.net/ 企业信息化联盟
- http://www.soidc.net IDC信息专家
- http://hi.baidu.com/wanhongnan/blog/item/519ca001589efe01738da54b.html