• info@voip55.co.uk
  • FAQ
  • Users Portal
  • Raise a support ticket
  • My Account / Log in
  • PBX / SIP-Trunking

  • Calls to UK Landlines & Mobiles
  • 40+ Phone System Features
  • Keep your existing number or choose a new UK number
  • Installation or Engineers required
  • Auto Attendant (IVR)
  • Ring Groups
  • Add Unlimited International Calling to 71 Countries
  • Toll-Free Numbers
  • Multiple DID Options
  • Remote Offices with Local Numbers
  • Call Data Records
  • Voicemail

PBX/SIP Trunking

£0Per Month excl VAT
  • Order Now!!

    Purchase your PBX / SIP-Trunking package now!!! Ideal for small business owners.

    Terms and conditions apply

  • Benefits of PBX/SIP Trunking

    SIP trunking allows your PBX (Private Branch Exchange) to connect to the PSTN through any form of internet connection; such as broadband, mobile data or ethernet connection. The SIP trunk service provider can connect between one, two or even unlimited channels for businesses, large corporations and contact centres.

    In comparison to ISDN and PSTN lines, SIP trunking is more flexible in how geographic numbers are used, and you can make long distance, local and international calls as long as you have an internet connection. It is quick to install and provision, and is cost effective and reliable in delivering robust business continuity.

  • Core Features

  • Flexibility

    You can be based anywhere in the UK and be able to use your telephone line nationally and internationally without physically being in your office; as long as there is an internet connection.

  • Savings

    A huge reduction in costs compared to an ISDN or PSTN line; without charges for expensive line rental and cheaper call plans.

  • Quick Installation

    Connectivity is faster as there is no engineer or installation requirements

  • Advanced Features

    The ability to integrate with all types of hardware and software, increased control and analytics allows access to an incredible range of new and modern developed features.

Frequently Asked Questions

What is Voice over IP?

Voice over IP is short for Voice over Internet Protocol, and is better known as VoIP.
Voice over IP refers to the transmission of voice traffic over internet-based networks instead of the traditional PSTN (Public Switched Telephone Network) telephone networks. The Internet Protocol (IP) was originally designed for data networking and following its success, the protocol has been adapted to voice networking by packetizing the information and transmitting it as IP data packets. VoIP is now available on many smartphones, personal computers and on internet access devices such as tablets.

What are the benefits of VoIP?

VoIP saves you money VoIP has great features VoIP gets you more phone numbers VoIP gets you phone numbers outside your area code VoIP is mobile High competition means better deals and lower prices VoIP piggybacks on your high speed internet Visit our article of the advantages and benefits of VoIP to learn more about these benefits in detail.

What are the disadvantages and problems associated with VoIP?

VoIP did have a few disadvantages and problems associated with it, in comparison to traditional telephone service. Most of these have been solved/can be easily solved. Just because the problems can be solved doesn't mean they aren't issues, though. VoIP doesn't work when the power is out VoIP doesn't have built-in 911 VoIP can have network outages VoIP call quality problems VoIP and security We have an article that explains these problems - and the solutions to these problems - associated with VoIP in specific: VoIP problems.

Do I need to be tech-savvy to use VoIP?

No. Not with hosted VoIP. With hosted VoIP, the VoIP provider takes care of installation and maintenance of the VoIP system. You do need to be tech-savvy if you're installing an IP-PBX business phone system or a SIP trunking system.

Can I keep my phone number with VoIP?

Yes. If you stay in the same geographic area, your VoIP provider or phone service provider must let you keep your local phone number. With other numbers, like toll-free numbers or virtual numbers, you may or may not be able to take your number with you. With some VoIP providers, they won't allow you to take 800 numbers with you.

Can I get a number of an area code other than mine?

Yes, your VoIP provider may permit you to select an area code different from the area in which you live. This means, if you live in Austin and get a New York number, you will NOT incur long-distance charges while calling a New York number, regardless of where you call from. It does means that your "local" calls, in Austin, will be charged long distance and that your friends in Austin will incur long-distance charges when they call your New York Number.
Additionally, most providers offer virtual numbers (sometimes known as "virtual extensions"). With this feature, you can obtain a number from a different area code in addition to your current area code. If you have relatives living in another area code, they can dial the local number to reach you, which saves them the cost of long-distance charges.

Can I take my number with me when I travel?

Yes, most providers allow you to use your VoIP service wherever you travel as long as you have a high-speed Internet connection and either a VoIP phone adapteror a mobile app. Through any of these mediums, calling works just as if you were dialing from your home or business — without incurring additional charges.

  • Talk to one of our specialists. Call us on


Your Cart