Read now Jun 12, 2019 ISDN Migration Checklist: ISDN to SIP This is a step-by-step migration cheklist if you are migrating from ISDN to SIP. This covers, phasing the migrations and how to audit your current system... Read now Apr 24, 2019 Do you have ISDN Phone lines? Go Hybrid! With the ISDN Phase-out it's a good idea to look at options. Hybrid is an option which utilises your existing ISDN infrastructure, which reduces your costs. Read now Mar 27, 2019 ISDN Phase out: Your Five Alternative options ISDN is being phased out in 2020 with switch off in 2025. What are your options and which one is best for your business? You have five options which are... Read now Sep 25, 2018 Phasing out of ISDN BT announced in 2015-16 that from 2020 you will no longer be able to purchase ISDN lines with a target date of 2025 for a switch off date. Read now Jul 09, 2018 ISDN vs VoIP In preparation for ISDN Phase-out, we have collated the pros and cons of ISDN and VoIP so you can make an educated decision in your research process. Read now Oct 10, 2017 ISDN vs SIP Due to the BT ISDN phase out, we have laid out the pros and cons of ISDN against its more modern counterpart; SIP (or SIP Trunks)