C# SOFTPHONE WITH DO NOT DISTURB

Ozeki VoIP SIP .NET SDK allows to develop Do Not Disturb (DND) function for SIP softphones. If DoNotDisturb flag is set to true, the incoming calls will be rejected by a busy signal. The Ozeki VoIP SIP SDK makes it possible to extend this program with more features like call hold, call forwarding, call transfer, auto answer, SIP/SDP message manipulation, .mp3 and .wav playing support, etc. The softphone is customizable with your own company name