conaito VoIP SDK ActiveX
conaito VoIP SDK ActiveX for developers
conaito VoIP SDK ActiveX for developers
VOIP Technology Quick Guide
MizuPhone -SIP Softphone for Windows
T.38 Fax/Voice modem for SIP/H.323/ISDN CAPI
Orion VoIP Monitor
VoIP Tunneling and Encryption
Mizu VoIP Server
MizuPhone -free VoIP softphone for Windows
SIP SDK provides tools
.Net SDK for VoIP call system development