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22Feb / in blog news 


In some European Countries, ISDN is already a thing of the past, and within the UK Ofcom have already set guidelines to follow suit, so now’s the time to ensure your companies resilience and look at upgrading your technology.
This is a warranted cut-off, with ISDN technology being an obsolete and expensive service hailing from the 1980s.
The question is: is your business prepared to make the change?
In this article we break down some of the terminology to help you understand the often-complex world of telephony.

What is PSTN?
“The public switched telephone network (PSTN) is the aggregate of the world’s circuit-switched telephone networks that are operated by national, regional, or local telephony operators, providing infrastructure and services for public telecommunication” – Source

Analogue voice data is sent over a circuit-switched phone line made up of copper wires which is owned and operated by your phone provider.

What is ISDN?
“Integrated Services Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network” – Source
Put simply your standard telephone line is used to send voice and data over the same line. This is why you can make phone calls on a home telephone and plug your broadband router in to access the internet using the same port.
Why is BT switching to IP?
BT introduced ISDN nationwide in 1986 and since then connectivity has advanced greatly. The recent investment and nationwide roll out of superfast fibre internet and new Ethernet products provides a viable alternative. In fact BT have not installed any new ISDN lines in central London since 2014 which goes to show that many businesses have already moved on. But switching over 3 million active ISDN users is no small task which is why they have given businesses so much notice.
What are the alternatives?
The recent investment in the UK communications network has made the new fibre infrastructure widely available and affordable to small businesses. This means IP based solution such as VoIP and SIP are the top alternatives for businesses.

What is SIP?
SIP (Session initiation protocol) provides you with a phone line which is carried over your fibre internet connection removing the need for an ISDN phone line. SIP lines used to have reliability problems due to inadequate underlying broadband connections. These issues have now been fixed due to the recent connectivity improvements and Service Level Agreements now offered by providers.

What is VoIP?
VoIP is a cloud-based telephony solution which moves your whole phone system online so all your calls are sent over your internet connection. This digital cloud-based phone system offers a wide range of additional features such as call recording, receiving voicemails via email, call queuing and unified communications – being able to access the system on multiple devices such as a mobile, tablet and desktop.
At Trinity Maxwell we are here to help.
In partnership with NFON and Chess ICT, Trinity Maxwell has a reliable and cost-effective Cloud Telephony Platform combined with award-winning Project Management Services to make the migration from legacy ISDN infrastructure to IP telephony a simple, easy and risk-averse experience.
Benefits of NFON Cloud Telephony Platform:
Secure access to NFON Cloud Telephony System 24 hours a day, seven days a week from any location that has an internet connection

• Easy management – via portal for both end users and administrators

• Cost effective – pay as you use

• Scalable – up to 250,000 users

• Access – via softphone, mobile application and desk phone
Stay ahead of the game, and look for an alternative to ISDN now instead of getting stuck in last-minute stress.
Please contact us on 0203 137 8450 or email at stephanie.kent@trinitymaxwell.com to find out more.

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