SIP Trunks or Hosted Telephony? Life after ISDN - what are my options? 13. August 2019 Kerstin (0) As you may already be aware BT is switching of its ISDN network in 2025 and will start the phase out next year; BT will not take any new ISDN orders in 2020. If you're looking to relocate, invest, upgrade or renew your current telephone system or you're still reliant on ISDN now would be a good time to review your options.What are my options?1) Replace your ISDN lines with SIP Trunks - SIP is a well established technology and is the preferred solution for many. Businesses have switched from ISDN to a SIP service as it's easy and quick as numbers can be ported and retained.2) Replace ISDN an your phone system with a Hosted Telephony solution - move to hosted service whereby your PBX and UC are hosted in the Cloud. This means you have no hardware on premise to buy or manage. The possibilities are endless.What are the benefits?SIP Trunks - UK businesses are enjoying the benefits of SIP Trunks, including low line rental and call costs, faster connections, increased efficiency, reliability, flexibility and scalability; add o reduce the number of channels you need and pay for what you use. Hosted Telephony - Many have already moved to hosted telephony and reaping the benefits, including easy setup and maintenance, great control accessing extensive range of features through our easy-to-use portal, flexibility to work and add / remove users regardless of your location, reliability and it's cost effective. There's no need for on-site equipment and you pay for as many users as you need.Which one is right for me?Hear what Paul Taylor has to say as he discusses what is SIP Trunking and Hosted Telephony. To find out more contact us via email firstname.lastname@example.org or call us on +44 (0) 20 3301 6000.