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VoIP.ms Wiki

Welcome to VoIP.ms Community Wiki!

In this wiki you can find guides, information and configuration examples for configuring your PBX, Device or Softphone.

Please note that this is a work in progress and continuously evolving.

We encourage users from the community to collaborate along with VoIP.ms staff to add guides, information and other articles pertinent to the service and products.

If you want to help by contributing with a new article or adding information to existing articles, please write to [email protected] requesting for edit permission for the username you use in this wiki.


An acronym for Private Branch eXchange. PBX telephone systems support incoming calls from the outside PSTN, placing calls between users' phones (also known as extensions) and other phones or the outside PSTN, conferencing other users together, recording voicemails and a variety of other advanced telecommunication functions. PBX systems are broadly broken into several categories: traditional (also known as legacy); converged (also known as hybrid) or pure IP, aka IP-PBX.

  • Traditional PBX systems usually either don't support IP at all or they support it only with expensive add-on equipment.
  • Converged PBX systems support IP and PSTN connections with equal force. It is the most flexible and cost-effective model.
  • IP-PBX systems, as the name implies, support only IP connectivity. Any PSTN connectivity must be achieved through external converters, known as Gateways.

PBX Examples

If you have a PBX and would like to see some examples on how to configure it, you can check our PBX's article


To be able to place or receive calls using VoIP, you may need a hardware setup that will allow you to use your regular phone (ATA) or a special phone that connects directly to VoIP networks (IP Phone).

  • ATA: An Analog Telephone Adapter is a device used to connect one or more standard analog telephones to a digital telephone system (such as Voice over IP) or a non-standard telephone system.
  • IP Phone: An IP Phone uses voice over IP (VoIP) technologies allowing telephone calls to be made over an IP network such as the Internet instead of the ordinary PSTN system.

Devices Examples
If you have a specific device and would like to see some examples on how to configure it, you can check our Devices article


A softphone is a software program for making telephone calls over the Internet using a general purpose computer, rather than using dedicated hardware. Often a softphone is designed to behave like a traditional telephone, sometimes appearing as an image of a phone with a display panel and buttons with which the user can interact. A softphone is usually used with a headset connected to the sound card of the PC.

Softphone Examples

If you have a Softphone and would like to see examples on how to configure it, you can check our Softphones article

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