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What is SIP and what does the end of ISDN mean for your business?

In 8 years’ time Openreach will be turning off the ISDN network. You may or may not know this, but ISDN is a digital technology that has long been deployed to small and midsize businesses. 8 years might seem a long way away, but there are literally millions of companies still using ISDN and switching to a more sophisticated SIP or Voice Over IP (VOIP) system should at least be something worthy of consideration for your business.

A recent survey found that 52% of IT Managers in small and mid-size businesses are now responsible for telephony. Surprisingly, the same study also found that 67% of IT manager didn’t even know what SIP/ VOIP was, despite it being the trend in the marketplace.

SIP trunks are effectively virtual phone lines delivered over an internet connection. This technology removes the link between your telephone numbers and physical lines which gives many benefits:

  • Calls are usually in the region of 40% cheaper than older technologies
  • Scale up / down the number of trunks (lines) on demand
  • Remote workers can have a landline number delivered to a mobile phone or desktop PC running a softphone
  • Disaster Recovery becomes simple as SIP trunks can be delivered via any internet connection to any location
  • Obviously everyone loves a saving, but the flexibility of SIP / VOIP are a far more suitable solution for modern flexible workstyles as well as offering insurance against unforeseen circumstances at the workplace

Mint Telecom already have dozens of customers using SIP / VOIP solutions ranging from On-premise phone systems, cloud phone systems and even an awesome new iPECS Cloud product that can integrate straight into Skype for Business (Office 365 Desktop App).

At Mint Telecom, we regularly save businesses 40-50% on their telecoms expenditure by migrating them from ISDN. If your business currently runs on ISDN lines, give Mint Telecom a call and have one of our IP telephony specialists demonstrate the business advantages of our products to you.


ISDN, VOIP, SIP, Mobility, Flexibility