Who still relies on ISDN
ISDN30 typically sits behind an on-premise phone system in offices with a reception desk, a main number and a block of direct dials. ISDN2 tends to serve smaller sites needing a handful of concurrent calls.
If your phone system lives in a cupboard, has a maintenance contract, and nobody knows who set it up, there is a good chance ISDN is feeding it.
What replaces it
The like-for-like replacement is SIP, which delivers the same channels over your internet connection and can usually plug into an existing system. The better long-term answer is a cloud phone system, which removes the on-site hardware entirely.
- Direct dial numbers port across unchanged
- Call capacity becomes a setting rather than a physical line count
- Remote and mobile workers get the same features as the office
- No maintenance contract on ageing hardware
Timing the move
Number porting takes a couple of weeks and a multi-site estate takes longer. Working back from your renewal date, and allowing time to test call flows, is the difference between a planned project and an emergency.
Want this set up for you?
Plans start at £19 per user per month with UK calls included. See pricing or get a quote.