Open Source Web Based Softphone -- 2

Call functions like mute, conference, hold, transfer, and call recording should be available. These options should be visible during a call. When you transfer a call, it will ask for your permission to move the call to another person first. Custom ringtones Echo cancellation and noise suppression Pop-up notifications Presence/online status Call history Voicemail messages and missed calls notifications Contact integration from LDAP, Outlook, or CSV Low resource consumption Supports SIP, XMPP, and IAX accounts TLS, SRTP, and ZRTP encryption Voice Codecs: G.729 (paid), a-law, U-law, GSM, iLBC 20 and 30, Speex Narrow Voice Codecs: H264 (paid), VP8 RAW SIP technology, not WebRTC. Similar Projects: Zoiper SIP Webphone