BT (British Telecom) will switch off its old public telephone network (PSTN) and the supply of analogue and ISDN lines will cease by 2025. From 2020 they will no longer accept new orders or amendments to services applicable to any ISDN products. As a result, users and suppliers of traditional telephone lines including ISDN will face significant problems if they don’t start planning for the big switch off now!
With 2025 seeming so far away you might be forgiven for thinking that there’s no need to act. But think again, the upcoming switch-off means that PSTN and ISDN lines are now seen as legacy systems by many telephone companies. Add to that the loss and retirement of long-serving, skilled engineers with knowledge of these technologies and it’s easy to see why support and investment will become sparse and therefore expensive.
What will replace the PSTN?
All planning is geared towards replacing this old technology with SIP (Session Initiation Protocol), which has rapidly become the new technology of choice for millions of UK businesses who’ve often been restricted by the lack of flexibility and cost of the outdated ISDN service. The unstoppable progress towards SIP lines for business has been driven by traditional telephone companies around the world phasing out ISDN, in favour of the more cost-effective, scalable and flexible technology that Voice over the Internet (VoIP) offers.
Further drivers for change include an increased understanding of the benefits of SIP as many businesses change their analogue or digital office handsets to IP handsets and portable UC (Unified Communications) devices. There’s also a Government pledge to provide fibre optic lines to 10 million premises by 2020 increasing the viability of SIP and VoIP based services.
What is a SIP line/trunk?
Traditionally we have been used to physical telephone lines provided by BT direct to our premises via the public telephone network (PSTN). Your business may have several analogue lines on the PSTN carrying voice or between 2 to 8 ISDN2 lines or upwards of 8 ISDN30 lines which can carry voice and data (for example faxes & photos etc.). SIP lines are not physical lines, but a flexible voice and data service provided over your business Internet connection.
Benefits of SIP Lines/Trunks
- Big savings on Line Rental
Up to 60% cost saving when compared with traditional ISDN.
- Competitively Priced Calls
For the UK and Internationally.
- Streamline Bill Management
Your voice calls, data and video are supplied over one Internet connection enabling you to manage billing seamlessly.
- Scale lines up or down rapidly
Additional channels can be added easily to cope with increased call activity eliminating the long and costly wait for a physical installation.
- Business Continuity
You can move offices and keep the same phone number saving the time, effort and cost of informing your customers.
- Avoid expensive over capacity – With SIP Trunks, you can easily choose the correct number of channels that you need. With ISDN 30 you often need to add either 15 or 30 lines.
By contacting NB Data today, we can speak to you about your current setup and offer a completely free consultation about moving to SIP trunks and VOIP Telephony.
|PSTN (Public Switched Telephone Network)||Traditional telephone network for voice calls|
|ISDN (Integrated Services Digital Network)||Traditional telephone network for voice, data and images|
|VoIP (Voice over Internet Protocol)||A methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks|
|SIP (Session Internet Protocol)||A communications protocol for signalling and controlling multimedia communication sessions such as voice and video calls.|
|UC (Unified Communications)||Combining telephony with PC, smartphone or tablet to provide voice calls, data, video, messaging etc.|
|IP (Internet Protocol)||Protocol by which data is sent from one computer to another on the Internet.|
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