AYRSHIRE: 01292 738284 | GLASGOW 0845 519 4425


Key to the running of any business and SIP / VOIP telephony is the future!
Bespoke SIP telephone systems and associated products and services.

Every organisation and business is unique, so every telecom service we offer is bespoke to you and your needs.

Asterisk PBX Systems

ITW4 are able to supply entire telephone systems setup to your exact specifications. Our Asterisk platform is virtually limitless. The system is extremely robust and we have supplied our solutions to everyone from low call volume businesses to 150 seat call centres.

Features include:

  • Ring Groups
  • Time Conditions
  • Shared Phone Book
  • Call Barring
  • Call Recording
  • Interactive Menus
  • Call Queuing
  • Voicemail/Voicemail to email
  • Call Forwarding (Internal/External)
  • Fax Detection

Hosted PBX

For businesses that want to keep their costs down and flexibility high, we have our hosted PBX system starting from £5.50 a month. We can supply and configure phones or you can supply your own. The advantage of a hosted solution is minimal reliance on your own infrastructure, and ideal for geographically separate businesses.

SIP Trunks

Working directly with our carrier partners, ITW4 are proud to be one of the few SIP wholesalers in Scotland. We provide SIP trunks from as little as £5.50 per month and we can expand as your requirements change.
We have supplied telephone systems for two handset operations to 150 seat call centres. With experience and training in both SIP trunks and SIP hardware, we are able to ensure we can get everything up and running smoothly.

Digium Hardware

ITW4 have partnered with Digium as our preferred choice of handset hardware. Digium handsets are some of the best we have encountered – feature rich, stable and well made with long manufacturer warranties.

Gamma Partners

We are partners with Gamma, a premium SIP, broadband and leased line suppliers with a number of offices and support agents based in Glasgow and throughout the UK. Through them, we are also able to offer hosted telecoms solutions using Polycom handsets on both short term and 36 month and 60 month contracts.