https://chrishayward.co.uk/tags/sip/ Recent content in SIP on chrishayward.co.uk Hugo en-gb Sun, 01 Nov 2026 18:30:00 +0000 https://chrishayward.co.uk/2026/11/01/90-days-until-the-bt-big-switch-off/ Sun, 01 Nov 2026 18:30:00 +0000 https://chrishayward.co.uk/2026/11/01/90-days-until-the-bt-big-switch-off/ With 90 days left until the UK's PSTN switch-off, here's how to audit your analogue lines and ISDN, and your options for ATAs, cloud phone systems and SIP gateways.