MicroSIP

What is MicroSIP?

MicroSIP is a free, portable SIP softphone for Windows, built on the PJSIP stack. It enables high-quality VoIP calls, whether peer-to-peer or via regular telephones, through the open SIP protocol. Users can choose from a cloud of SIP providers, register an account, and leverage free peer-to-peer calls as well as cost-effective international calling. The application's key features include minimal RAM usage (less than 10 MB), written in C and C++ to optimize system resource utilization, user-friendly daily usability, support for voice, messaging, and presence functionality, strong conformity to SIP standards, best-in-class voice codec support, and portability through configuration stored in an INI file

Highlights

• Minimal system resource usage (under 10 MB RAM)
• Supports voice, messaging, and presence functionalities
• Strongly conforms to SIP standards for seamless compatibility
• Offers a choice of SIP providers for free peer-to-peer and low-cost international calls