VOIP & Asterisk

A VoIP-based phone system uses your internet connection instead of dedicated telephone wires to place calls. This means that you can make any number of simultaneous calls without running out of lines - the only obstacle is how many employees you have.

VoIP phones use the internet to place calls meaning you can have as many calls running as you like, and you can have international phone calls with people on your extension without any charges


SIP Trunking

Calls over the internet

Blacklist numbers

Call transfer

Ring groups


Calling rules

Call queues

Caller menus

Caller ID

Integrated phonebooks

Conference calls

Music on hold

Integration with Frontier

More information

Voice-over-Internet Protocol (VoIP) telecoms systems used to be regarded as a thing of the future; a dream that won't be fulfilled soon. That's all changed now, and we at DH Systems are able to offer you a VoIP telephone system that is cheaper, easier, and more adaptable than any standard telephone system.

With a standard telephone system, you need to have a separate line for each simultaneous call you want to make; you need to get specialist cabling hooked up; you need to have an engineer come in and set it all up for you. With VoIP, none of that is true.

  • Unlimited simultaneous calls
  • Unlimited extensions
  • Plug-and-phone setup: start making calls on a new extension within five minutes
  • Integrated global phonebook
  • Conference calls
  • Personal voicemail inboxes

Product gallery

Works well with

Frontier Vehicle Dismantling

Our complete stock control and invoicing system fully integrated with manufacturer part numbers. Reg search, sales, invoicing, ebay, web listings, it does it all.

Frontier Vehicle Salvage

Our complete salvage system that handles everything from uplifts through to selling, auctioning or disposal of vehicles, including insurance contracts.

Other products

Frontier Dismantling

Frontier Dashboard

Frontier Mobile

Frontier ebay

Frontier Recovery

Frontier MyDataShark