Commercial and Residential VoIP SIP Trunks
Call the office: 020 333 22 123


Commercial & Residential VoIP SIP Trunks

About SIP Link Services

SIP Link Services are part of COM-TEL Telecom Ltd, one of the UK’s fastest growing independent Internet Telephony Service Providers (ITSP) offering a wide range of VoIP solutions for your home or business.

A SIP trunk is a virtual digital phone line that connects your telephone system or Private Branch Exchange (PBX) to the traditional analogue Public Switched Telephone Network (PSTN) and wider digital telecommunications networks, via the internet.

The Big BT Switch OFF
Analogue PSTN system to close by 2025

The Big BT Switch OFF!

BT are in the process of moving all of their customers from the old analogue public switched telephone network (PSTN) to a fully digital network.

The plan is to have everyone moved over before Openreach stop the PSTN (and ISDN) service in 2025. By then, every phone line in the UK will be digital, routing calls over the internet via VoIP (Voice over Internet Protocol) rather than the traditional PSTN.

In order to access the digital phone networks, you need a SIP Trunk.

We are able to offer you SIP Trunks at extremely competitive prices regardless of whether or not you are an existing customer and have one of our PBX’s.

Our SIP trunks are compatible with most major PBX makes and manufacturers.

Our SIP Link Services

We aim to route your calls in the most affordable and economical way without sacrificing call quality. This is what is commonly referred to as Least Cost Routing (LCR) and has many advantages, not at least because we can pass on our low calling rates, which means it represents even more savings for you.


Least Cost Routing means we can pass on the savings to you without sacrificing quality. On Average businesses save 62% on communications costs



As you grow, so will the number of channels you need grow. We will work with you to ensure the balance is right and keep you running efficiently.



Our state of the art high-tech data centres are monitored 24 hours per day making sure we deliver the highest quality telephony services to you with an unrivaled customer support service.



Our SIP trunks are compatible with major PBX’s such as 3CX, Asterisk, Avaya, Mitel, Samsung, LG and Panasonic and many more. 
Contact us about your requirements.


Contact us and let us get you connected!
Call 020 333 22 123 or use the form below

Contact us

Call 020 333 22 123 or use the form below