WINDOWS FORMS SOFTPHONE IN .NET

Ozeki .Net SIP SDK for developing Windows Forms softphone to make/receive multiple VoIP phone calls. The Ozeki Windows Forms softphone sample has basic telephony functions, handles DTMF signals and customizable with further functions & company logo or brand name. It delivers crystal clear sound due to the extended codec support. It works with almost all VoIP PBXs (like 3CX, Asterisk, Cisco UCM, etc.) and with online VoIP providers such as Skype