The PortSIP Softphone for Windows is a free SIP softphone which built base on PortSPI UC SDK(https://www.portsip.com/portsip-uc-sdk), it supports below features ...

This is an archive of the project I made on my final year at university. It's fun to see how one has evolved, isn't it? :-) ...

SIP operates in a peer-to-peer manner, where end devices (such as phones or softphones) can communicate directly with each other or through proxy servers. SS7 stands for Signalling System No. 7 ...

Softphones offer all the functionality of regular landline desk phones, along with a range of added capabilities (auto-attendant, voicemail, video conferencing, etc.) that are accessible via a ...

With RingCentral, you have a complete unified communications solution. Enjoy softphone, fax, text, and video conferencing in one app. Presenting RingCentral softphone, embedded in the RingCentral App ...

Once you have a new SIP account, you can configure it with a SIP softphone app and start enjoying free VoIP communication.