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3cx tunnel

Troubleshooting a Direct Remote Extension

February 10, 2012 - 8:03 pm | 7 Comments

This step by step guide will help you troubleshoot a direct remote extension setup at home or at a remote office. Direct remote extensions can work but correct functionality cannot be guaranteed as there are many factors at play (such as: Network Topology, Router configuration, Firewall settings, etc.) and you may not have control over all the devices involved to make the proper changes necessary for a direct remote extension

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Configuring External Extensions with 3CX Phone System

January 15, 2012 - 10:30 am | 10 Comments

Connecting an External Extension to 3CX PhoneSystem is often requested, and can be extremely useful for linking small remote offices and home workers. Here we get a shot at using other phones as External Extensions. Note: If you are looking for instructions to connect a SIP Hardphone using the 3CX Tunnel Protocol via the 3CX SIP Proxy Manager, please view this guide. Using a SIP Hardphone as a Direct External Extension

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New Version of 3CXPhone for Android Available with 3CX Tunnel (1.3.1)

September 3, 2011 - 12:25 pm | 11 Comments

We are pleased to announce a new release of 3CXPhone for Android, build 1.3.1, which includes the 3CX Tunnel. With the 3CX Tunnel feature, you can proxy all SIP and RTP traffic over a single port and bypass any restrictions that telecom providers implement to block VoIP calls. Often telecom providers will block common VoIP ports. Please show your support for the free 3CXPhone for Android by rating our app

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3CX Phone Configuration

August 2, 2010 - 5:34 pm | 0 Comments

3CX Phone can be configured to connect to 3CX PhoneSystem from the same LAN, and also from a remote location. If 3CX Phone is going to be used from a remote location, you can also take advantage of the built-in tunnel functionality to overcome NAT traversal issues, allowing you work from virtually any remote location. 3CX Phone has STUN settings pre-configured, but it is smart enough to know that it

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Securing 3CX PhoneSystem – some hints!

June 14, 2010 - 11:09 pm | 5 Comments

If you have been asking yourself how to secure 3CX PhoneSystem, read on…

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Firewall Configuration Overview for 3CX PhoneSystem

March 29, 2010 - 2:57 pm | 0 Comments

In order for 3CX Phone System to communicate successfully with VoIP providers and Remote Extensions, your firewall/router device must be configured for SIP operation. To maximize your chances of success, make sure you choose a device that does not implement a SIP Helper or SIP ALG, or which can be configured to be disabled.

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VIDEO: 3CX Tunnel – Configuration (Part 2)

February 23, 2009 - 9:48 pm | 0 Comments

This VoIP Nugget explains in detail how to setup the tunnel server side. It then shows how to setup the 3CX VoIP Phone to connect from anywhere on the internet to 3CX Phone System.

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VIDEO: 3CX Tunnel – Overview (part 1)

February 17, 2009 - 4:11 pm | 0 Comments

This VoIP Nugget explains what the 3CX Tunnel is – and why it makes configuring external extensions and bridges easier. A second VoIP Nugget will be published that shows exactly how to configure the 3CX Tunnel with the new 3CX VoIP Phone.

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