A SIP Proxy server handles the setup of SIP calls on the network. A SIP Proxy is also known as a SIP Server or a SIP Registrar. The SIP Proxy is essential for a SIP PBX to work as a practical service. SIP Proxy servers have various functions such as helping route requests to the user’s location, authenticate and authorize users for services, implement provider call-routing policies and provide features to users.
3CX Phone System – a Windows-based SIP Proxy Server
3CX Phone System for Windows is a SIP proxy server that replaces a proprietary PBX, supports popular SIP soft/hard phones, VoIP services and VoIP providers. The Unified Communications 3CXPhone client for Windows, Android and iPhone, makes phone system management easy.
- Increases mobility
- Open standard SIP proxy – use popular SIP phones and VoIP Gateways
- Eliminates costly telephone tag
- Easier installation, management, adds/moves
- CRM, ERP, Outlook integration
- Vendor independent