Moving from ISDN to SIP Trunking

Seamlessly integrate your communication technology for flexible working. Empowering your team to work effectively in real-time, no matter how they choose to communicate.

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Take control of your communication systems with SIP trunking

As Integrated Service Digital Network (ISDN) is being phased out over the next few years, switching to IP-based telecoms is crucial.

Instead of switching to a fully cloud-based telephony system, SIP trunking (Session Initiation Protocol) is a scalable and cost-effective alternative. It can form a crucial part of your business’ unified communications, offering quick set-up, scalability, and flexibility for geographic telephone numbers.

It works like a digital version of a traditional phone line, but it can transfer packets of multimedia data including voice, video, or text messages. Whereas ISDN uses the traditional copper network to allow businesses to make inbound and outbound voice calls through the internet.

Get in touch with us today to discuss your day-to-day business requirements, so we can advise on the best solution for your business communications.

Why switch from ISDN to SIP?

Switching now from ISDN to our SIP trunking solutions means you’ll be ahead of the switch-off in 2025. Future-proof your business to improve communications and collaboration using unified communications such as VoIP. Your employees will gain access to the systems they need, no matter where they work from, by connecting your current phone system to the network.

You can integrate phone and messaging services into one manageable system while keeping your existing phone numbers for minimal disruption across the business.

There’s peace of mind too, because SIP uses your internet connection, which often comes with better SLAs (Service Level Agreements), built-in redundancy, and provides greater reliability than ISDN.

We tailor our SIP trunking around your business needs, providing an easy solution to support your employees daily.

How does SIP trunking installation work?

Perfect for businesses with high call-volumes, this flexible and modern solution allows your business to experience the benefits of a hosted solution with minimal disruption, as you can continue using your existing telephone equipment.

We work with you and your IT team or partners to ensure a smooth changeover, with configuration and set up carried out before arrival on site.

After your SIP installation, if you run into any problems or need advice, our support team will be on hand to help either through email or phone.


What are the benefits of business VoIP?

Save Money

VoIP services are cost-effective for businesses of all sizes. They don’t require maintenance or upgrade costs.

Put your customers first

The advanced receptionist console is built around your customer’s needs. Drag and drop calls into queues, transfer and park them on a screen, access call history and directories, and integrate your CRM so customers always speak to the right person.

Take control of your telephone

Monitor costs and performance through an online portal, and export information for your reports. Configure your entire system online.

Future-proof your business

VoIP is a scalable solution which can grow with your business. When a new feature is released, you can get it as soon as it’s available, keeping you ahead of the curve.

Reliable and secure system

Call re-routing provides the flexibility to answer calls from any location. VoIP gives extra protection, so that your system is kept secure, with features including disaster recovery.

Increase productivity

Employees are able to use the system remotely, as long as they have access to the internet wherever they are based or at least 4G coverage if on the move. Increase your team’s productivity by allowing them to work on the move.


Is SIP trunking right for your business?


For businesses with multiple users, perhaps across different sites and working remotely, it’s the ideal solution. Especially if you’re looking to reduce the cost of communications and increase productivity. l. Ideal For growing businesses adopting modern and flexible ways of working, but aren’t ready to transition to a full hosted telephony solution, it’s a no-brainer. 

How does the audio and call quality compare?


Using hosted telephony such as SIP means audio and video are transmitted digitally and are comparable to ISDN lines in terms of quality. The key factor affecting this is your network bandwidth, and that’s where a good business broadband package or leased line comes in.  

How are faults managed with Yappl?


You’ll report all faults to our in-house support team either through email or over the phone, where we’ll then take the necessary steps to fix the fault within our SLA. 

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