Implements all telephony related class5 features like voicemail, call transfer, conference, presence, IM, video, FAX, SMS, all significant codecs (g.729, g.723, iLBC and many others) and extends standard SIP services with other valuable functionalities like click to call, remote desktop and file sharing over sip, client side voicemail and IVR, HD video capability and scriptable actions.
Mizu Softphone is a sip client software designed especially for VoIP service providers.