Description: 3CX is an open-source IP PBX software solution that works with popular SIP phone systems. It offers unified communications features like auto attendants, call routing, voicemail, video conferencing, and more.
Type: software
Pricing: Open Source
Description: DrayTek SIP SoftPhone is a free VoIP softphone for making and receiving calls over the internet. It supports standard SIP protocol and can integrate with IPPBX systems and SIP trunk providers. Basic features include call history, contacts, call transfer, conference calling.
Type: software