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SIP Trunk solutions can be a minefield for some businesses but, when installed, they can bring a number of benefits. In a modern taxi business, a good quality phone system is as important as the taxi itself. Without a phone system, you’ve got no customers calling you, no way of contacting your drivers and no way of communicating with anyone.

However, phone systems have developed rapidly over the years and having a reliable, robust and future-proofing phone system can be the key to your business’ success for years to come.

With ISDN lines set to be switched off in 2025, there’s never been a better time to discover how switching to SIP Trunking can benefit your business.

SIP Trunks connect your PBX to the internet, acting as a gateway to a fully hosted solution. The service is delivered end-to-end with a 99.99% availability, voice channel guarantees and voice Quality of Service.

For an easy to manage upgrade, a SIP trunk solution not only replaces the soon to be outdated ISDN lines but also gives your business numerous benefits.

Save money

With traditional telephony, businesses with high call volumes can end up paying for capacity they never use because they don’t ever want to be caught short. However, switching to SIP Trunking can save up to 50% on line rentals and 25% or more on call costs. With SIP Trunking, your usage is calculated far more accurately so you only pay for what you use, rather than paying for your forecasted usage. What’s more, SIP trunking is also ideal for businesses with multiple sites and multiple mobiles as you’ll get free internal calls within your organisation, no matter how many times you need to call.

Scale up and down

SIP trunk solutions are ideal if you are moving, upsizing or downsizing and want to keep your existing numbers. Scale up lines during busy periods and back down again afterwards. You can add lines, take them away and split calls at any time. With a SIP Trunk, you’re always in control.
It’s easy and simple to add a line should you hire more staff and, equally, it’s as easy to scale things back down should you ever need to.

Business continuity

Businesses of all sizes need a business continuity plan for telephony and SIP trunks can handle emergencies easily. SIP Trunks can protect your office environment in case of fire, flood or other natural disasters. For example, if one branch has to close in an emergency and you need calls routed to another office immediately, SIP Trunks can do this and at no extra charge to you. Set up at your new location is quick and easy and there are no call-forwarding costs for each inbound call.

Number flexibility

SIP Trunk solutions support business relocations by enabling a geographic number to be retained without your business incurring any call forwarding costs. This ensures business continuity and reduces the costs of having to change company stationery, listings and advertisements. With some providers, you can also supply out-of-area geographic number ranges to make your organisation appear local, even without a physical presence. You can also decide which number you want to display on a call by call basis which makes things great for busy offices and, offers a degree of comfort to regular customers.


If SIP Trunks are installed correctly, fraud also shouldn’t be an issue. A correctly configured SIP Trunking solution be monitored for fraudulent activity and, with firewalls built in, nothing should be compromised. If you’ve ever had to deal with a service outage you’ll know that speed of response is key and SIP Trunks are engineered to cope with most situations to maintain telephony uptime, whether you need to keep your businesses running in an emergency without the high cost of call forwarding or simply need to balance call loadings.


For modern businesses, there is no longer a good reason to continue working with an ISDN-based telecommunications solution. With the cost-saving potential of SIP trunking, as well as its resilience and reliability, it is the common sense option for any organisation looking to be always on, and to provide customers with a first-class experience.