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voip providers

Configuring a Gamma VoIP Provider Trunk

February 8, 2012 - 4:25 pm | 5 Comments

Note: This guide is for information purposes only. If you require assistance with a trunk provided by Gamma Telecom, please contact Gamma directly for assistance. If you are planning to integrate with a VoIP Provider within the Supported Providers List, please visit this page. To obtain reliable connectivity with a VoIP Connection from Gamma Telecom (in the UK), you will need to have 2 Network Interface Cards (NIC) installed on the 3CX Phone

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VIDEO: Troubleshooting and Logging

May 4, 2011 - 11:44 am | 0 Comments

Skills Covered by this Module What devices or providers are 3CX-Supported, and why. What devices or providers are Vendor-Supported, and why. What devices or providers are Unsupported, and why. Types of issues you may encounter. The Server Activity Log and what it can show you. What log messages to look for. Verbose Logging mode. How to create a Support Information File. Wireshark, and how to make a network traffic capture

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VIDEO: Configuring a Bridge

April 30, 2011 - 5:14 pm | 0 Comments

Skills Covered by this Module What is a Bridge? What type of Bridge connection to set up Firewall considerations for Bridges similar to those for VoIP Providers How to configure a Bridge connection on 3CX PhoneSystem

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Can I exchange a Fax between a VoIP Provider and a Grandstream GXW-4004/4008/4024?

February 7, 2011 - 10:41 pm | 0 Comments

It is not possible to use Grandstream 4004/4008/4024 as an ATA for a fax machine and send faxes through a VoIP provider, unless the VoIP Provider includes support for delivering T38 traffic to the Public IP Address in the packet header, rather than the Private IP Address declared by the Grandstream in the SIP/SDP packets it generates. Without this support from the VoIP Provider, this functionality is possible only if

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3CXPhone 5 adds video, BLF to free soft phone in Smartphone Look

December 1, 2010 - 2:58 pm | 14 Comments

3CX’s popular free business soft phone does Unified Communications and becomes ‘Zero Admin’ London – November 30, 2010- 3CX today announced a new version of its popular free VoIP soft phone for Windows, 3CXPhone 5. New features added to 3CXPhone 5 include standards based video support, multiple SIP profiles, BLF and the ability to provision and manage all soft phone installations network wide. 3CXPhone 5 will remain completely free.

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Outbound Rules – A Complete Example

July 20, 2010 - 4:44 pm | 2 Comments

Configuring Outbound Rules on 3CX PhoneSystem is a very simple affair if you have a single device or service which you deliver calls with – in most cases a single rule will be enough. But the Outbound Rules in 3CX PhoneSystem allows you to create much more complex rules – allowing you to not only select backup routes which come into effect when other routes fail, but also to select

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General Configuration Information when using VoIP Providers

May 3, 2010 - 2:20 pm | 3 Comments

This document will provide an overview of the more common concepts which need to be kept in mind when configuring 3CX PhoneSystem inside your network infrastructure, including the following topics: NAT Configuration STUN Resolution DNS Resolution in a VoIP environment Custom Configuration for particular network layouts Different types of VoIP Provider Accounts Custom Source Identification for VoIP Provider SIP message exchange

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Bandwidth Overhead over DSL connections

April 16, 2010 - 5:00 pm | 4 Comments

Internet Service Providers typically rate their connectivity services based on download and upload bandwidth. So for example you may subscribe to an aDSL connection rated at 2 Mbps (Megabits per Second) download and 1 Mbps upload. The traffic reaching the provider’s network from the aDSL modem is then routed to its eventual destination by traversing an ATM (Asynchronous Transfer Mode) network, and to do this, packets are broken up into

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3rd Party Supported VoIP Providers

January 1, 2010 - 9:00 am | 0 Comments

The VOIP Providers listed below are not directly available in the ‘Add VOIP’ section of the 3CX Phone System Web Interface, but are known to work with 3CX Phone System and tested by 3rd parties.

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