NEC UNIVERGE
NEC UNIVERGE systems, especially the SV9100, are still widely used by UK businesses. NEC's own names for settings vary by software version, so treat the terms on these pages as a starting point and check them against your own system.
NEC has said it is phasing out on-site phone systems outside Japan. NEC Corporation of America's April 2024 notice ended new sales on 31 December 2024, and support and regular software maintenance on 31 March 2026. That is a US notice, so UK arrangements may differ. Your system will keep working, but ask your maintainer about spares and software support now. Read the notice (third-party copy) ↗
The method is the same as on any system: find the stage, then check safely. See the general call-routing guide for how a call travels.
NEC UNIVERGE systems, especially the SV9100, are still common in UK offices, schools and surgeries. Our NEC guide covers the most searched fault, a phone that doesn't ring, using the same six-stage method as every other guide on the site: night mode, routing, ring groups and the extension's own settings.
NEC uses its own names for several settings, and they vary between software versions, so check any term against your own system's documentation.
How a call travels through an NEC system
Press a stage, or let it play. The SV9100 uses its own names, but a call takes the same path.
NEC day mode and night mode
Press a step to jump to it. Save the GIF to share it.
NEC
Free infographics for this topic
One-page summaries of each guide, free to print, pin or share with credit. Click one to open its guide, where you can download the PNG.
