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The end of ISDN is nigh

 In Blog

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The End of ISDN

The death knell has sounded for ISDN. Long live SIP! BT has announced that they will be withdrawing ISDN services by 2025, which means that all businesses will have to migrate their telephony onto an IP alternative like SIP.

The most common solution is to migrate to SIP trunking. With SIP, telephone numbers are moved off the local telephone exchange and into the cloud and the SIP is connected to an IP enabled telephone system on site. Telephone calls are delivered over a secure managed internet Ethernet connection that guarantees voice and comes with better service levels than traditional analogue lines.

Compared to ISDN:

SIP is cheaper on a per channel basis especially when considered together with the SIP trunking costs for call charges and setup.

SIP delivers internal call cost savings due to calls between multi-site branches being on-net.

SIP often comes with an inclusive call package so businesses can enjoy free calls.

SIP enables multi-site organisations to replace multiple ISDN lines with a centralised SIP trunk and aggregate their SIP channels.

SIP numbers are virtual so stay with a firm or an employee wherever they are making remote working easier.

SIP trunking can greatly improve business continuity because SIP delivers complete independence with regard to location, ensuring that a business never loses calls even if it cannot access its premises.

The alternative is to move your whole telephone system to the cloud with a hosted system like STL Horizon. A hosted solution allows numbers to be migrated off the telephone exchange into the cloud. Telephone calls are delivered on a hosted telephone system while the handsets are on site.

If your business is on ISDN, talk to our experts about moving from ISDN to SIP or hosted a solution. Call our sales team on 01993 777120 or Email: 

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