Which Phone Line should I choose?

Your business’s phone system cannot function without choosing a type of phone line. So, before you choose an all-singing-and-dancing phone system, you’ll need to consider what phone line will be the best fit for you to get the calls to and from your phone system.

A phone line needs to give your business:

Flexibility with your phone numbers– High quality calls – Business Continuity– Confidence that it won’t hinder your growth plans

There are two main contenders for phone lines:

ISDN Phone Lines are a traditional type of phone line which uses physical lines to transmit voice calls. You have to purchase an ISDN phone line for every 8 channels. You won’t be able to purchase any additional lines past 2023. This technology is being switched off between April and December 2025.

SIP Phone Lines uses virtual lines (internet lines) to transmit a phone call. It is the most superior type of phone line. This is mostly down to the flexibility it gives you, the speed in which you can add/remove lines, the quality of the calls and the lower call costs.

If you choose a SIP Line, you may also want to choose a phone line management solution which increases your control over your phone numbers and how calls come into your business. We recommend an Inbound Phone Line Management solution.

There isn’t one size, fits all, so please do get in touch to discuss your requirements!

Discover more about ISDN, SIP and Inbound.

ISDN Phone Lines

ISDN is a traditional type of Phone Line which still has a place in today’s business world, at least until the BT ISDN switch off in 2025.

There are two types of ISDN phone lines – ISDN2 and ISDN30e…

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ISDN30e services are more about providing high-performance voice services for business with eight or more employees.

ISDN2 is similar to a standard phone line although with ISDN2 the lines can be separated for internet and phone calls.

A word of caution; You will not be able to purchase additional ISDN Phone Lines by September 2023 and in 2025 there will be a forced migration where ISDN lines will be switched off.

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SIP Lines

SIP and SIP trunks is an on-premise solution for a telephone system that will use virtual phone lines rather than physical wires.

SIP Trunking is fast becoming the best alternative to ISDN…

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because it is extremely flexible as you can attach your number to any phone and it’s highly scalable and quick to deploy for when your business grows.

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Inbound Phone Line Management

Inbound gives you full control of your phone numbers and the calls that come into your business.
Inbound is great for simple call routing through to large-scale call centres. You can route, monitor and manage your calls, easily, without…

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being reliant on a network operator to make the necessary changes for you. This means you can identify key metrics such as the volume of missed calls, waiting times etc so that you are able to pull reports that are relevant to you to create change in your business.

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Are you doing Research on Phone Lines?

We have collated a selection of free resources based on phone lines. Topics covered include:

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