3CX has announced the release of version 5.1 of 3CX Phone System for Windows. The latest version of the award-winning IP PBX has an integrated 3CX Tunnel which simplifies firewall configuration by channelling all VoIP traffic over a single port; making it easy for remote workers to connect to their company’s PBX and for Network Managers to connect different remote PBX systems between them. Traditionally, firewall configuration for remote SIP / VoIP systems and/or extensions can represent a challenge, because it requires many open ports.

Nick Galea, CEO at 3CX said: “We know how important it is for businesses nowadays to have remote workers and branches seamlessly integrated to their company’ phone system, and the addition of the 3CX Tunnel to 3CX Phone System for Windows facilitates this process.

“The 3CX Tunnel, unlike other similar tunneling protocols, is not proprietary and can be used with popular VoIP softphones and hard phones. This is ideal for businesses, as they can use a variety of telephone options with their IP PBX depending on their needs and budget.”

Key advantages of the 3CX Tunnel:

* Easy firewall configuration - choose any port (ie. port 80) for seamless networking

* Remote workers do not need to edit the firewall configuration to be able to connect to the IP PBX from any location (ie. home, hotels, conference centres, airports, and so on.)

* Mobility, productivity and cost-saving advantages for businesses from the integration of remote workers and branches to the company’s phone system.