sip gateway downloads
VoIP H.323 SDK for .NET and ActiveX
1.0 download... receive H.323 based phone calls through any H323 gateway or H.323 compliant IP-Telephony service provider * VoIP conferencing with crystal clear sound even for both low and high-bandwidth users (G711 ...
4PSA VoipNow Express
1.6.2 download... remote conferences and call queues. Standard PBX features: SIP and IAX channels support - Caller ID / Call management / call recording / Voicemail / DND (do not disturb) function ...