SIP Proxy Server for Windows – Free : 3CX Phone System

A SIP Proxy, also known as a SIP Server or SIP Registar, handles the setup of SIP calls on the network. It is essential for a SIP PBX to work as a practical service as the 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.

An example of a SIP Proxy server is 3CX Phone System – a Windows-based SIP server.

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 Android, iPhone, Windows and Mac makes phone system management easy.

Key Advantages:

  • Increases mobility
  • Open standard SIP proxy – use popular SIP phones and VoIP Gateways
  • Eliminates costly telephone tag
  • Easier installation, management, adds/moves
  • Windows-based
  • CRM, ERP, Outlook integration
  • Vendor independent


Take a look at the brochure or download the Free Edition today and break free from your proprietary PBX!

3CX Phone System named in CRN's 2013 Partner Program 3CX Phone System wins the CRN 2012 Emerging Tech award 3CX Phone System wins the CRN 2011 Emerging Tech award 3CX Phone System awards Make and receive Skype calls from your office phone with 3CX Phone System 3CX Phone System awards