SIP TRUNKING
Our SIP Trunking / SIP Trunk VoIP telephone lines are available for use with the majority of VoIP enabled PBX Telephone Systems. As well as our SIP Trunking Services we can also offer VoIP Gateway solutions to enable legacy analogue and ISDN telephone systems to take advantage of low cost VoIP phone lines.
Our SIP Trunking services are available for only £2.00 per month rental, with low cost call rates and a high quality service. SIP Trunks are quick and simple to set up and with lower installation and start up costs compared to traditional analogue and ISDN telephone lines they are a great choice for businesses who want to take advantage of modern communication technologies.
GET THE MOST FROM YOUR IP PBX
Businesses that have recently installed or upgraded their phone system will be aware of it’s VoIP capability and will want to make some or full use of the VoIP capability and not only communicate over IP within the enterprise, but also outside the enterprise. A SIP trunk provided by an Internet Telephony Service Provider to connect to the traditional PSTN network is the solution.
Unlike traditional telephony, where bundles of physical wires were once delivered from the service provider to a business, SIP trunking allows a company to replace these traditional fixed PSTN lines with PSTN connectivity via a SIP trunk service provider using the Internet to provide the link between the phone system and the telephone network.


Onestream VoIP and GSM Gateway
Now you can easily connect your analogue or ISDN2e Phone System to our SIP Trunking service with our innovative new product, the Onestream VoIP GSM Gateway.
The Onestream gateway connects between your telephone system and telephone lines and enables calls to be routed over the internet to our SIP Trunking Service. The Onestream Gateway also allows you to make calls directly over the GSM Network using the built-in 2 channel GSM Gateway. As well as these cost saving options of VoIP and GSM connectivity options, the Onestream Gateway also provides extra functionality such as Mobile Extension so that inbound calls can be answered by the phone system extensions or by a remote user on a mobile phone. The Onestream Gateway also enables IP Phones to be registered so that you can add homeworkers to your phone system with the convenience and cost saving of VoIP technology. Click here for more information.
Our SIP Trunks are easy to order, simply call our sales advisors on 0800 298 8011 and we can confirm your requirements and send you an order form and direct debit mandate for you to complete and return. Once we receive your completed SIP Trunking order form we can e-mail your connection settings and DDI numbers so you can configure your phone system and start using our SIP Trunking service straight away.