KPN starts ISDN phase-out, alarm system may fail<\/p>\n
Because the technology has become severely outdated after almost 30 years, KPN is stopping supplying ISDN. This may have implications for still a large number of alarm systems, as ISDN was very popular in the security industry at the time. Users are advised to test their systems.<\/span><\/p>\n It had been announced quite some time ago, but then yesterday was 'Black Sunday'. The day when KPN would start decommissioning its ISDN network. The technology that was once introduced as an improvement to analogue telecommunications has since been superseded by All-over-IP. The security industry had been informed over a decade ago that this would happen and developed equipment, which could make existing alarm systems suitable for IP networks. However, many installers and users of alarm equipment decided to wait and see, as the conversion involved reasonably high costs.<\/p>\n