3CX VoIP Tunnel
3CX Ltd.
1.0.0 0.8mb

What is the 3CX VoIP Tunnel:

This application provides Voice over IP service by combining all SIP (signaling) and RTP (media) VoIP Packets from one location (typically a remote office) and deliver them to and from another location (typically the PBX Server) using a custom TCP protocol. This simple concept allows us to bypass NAT situations, and to simplify VoIP calls by passing all SIP and RTP traffic from 1 single port.

The 3CX VoIP Tunnel can be used for the following reasons:

-Resolve NAT Traversal issues at both the remote and the PBX location
-Simplify Firewall configuration at both the remote and the PBX location
Overcome difficulties with ISPs that block VoIP Traffic based on well known SIP port numbers
Allows VoIP-over-WiFi in some restricted locations, such as Hotel rooms
Provides ability to make VoIP Calls via firewalls that cannot handle VoIP traffic correctly or which are very difficult or problematic to configure.

The 3CX VoIP Tunnel can be used with the 3CXPhone for iPhone (downloadable in the APP Store) or any other soft/hard SIP phone.

General Information:
Configuration Manual:
End User Manual:

About 3CX:
3CX is the developer of 3CX Phone System – an open standard unified communications platform for Windows that works with standard SIP phones and replaces a proprietary PBX.
3CX is more manageable and can deliver substantial cost savings besides increasing productivity.
Leading companies worldwide such as Formula One’s Team Lotus, Boeing, Ohio State University, MIT and RE/MAX use 3CX Phone System.
3CX has been listed as a CRN 2011 Emerging Vendor and has earned Windows Server Certification as well as other numerous awards, including The Windowsnetworking.com Gold Award, the Windows IT Pro magazine 2008 Editor’s Best Award and a Best Buy Award by Computer Shopper Magazine.
3CX has offices in the UK, USA, Germany, Cyprus, Malta, Australia and Hong Kong.
For more information, visit: http://www.3cx.com and find us on facebook at http://www.facebook.com/3CXPhoneSystem.

Content rating: Rated 4+

Requires OS: 4.2

Supported Devices:
- iPad
- iPhone
- iPod Touch

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