Migration Mitel → 3CX
Legacy PBX PSTN · ISDN
Hosted 3CX Cloud · SIP
· Andrew Morris

Anatomy of a real 35-phone switch.

We got full sight of a complete procurement record — a 35-person firm leaving a dying Mitel PBX for hosted 3CX. The trigger, how a careful buyer shops, the nine contract questions worth stealing, and the cutover nobody warns you about.

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Voice · UK → UK sub-15ms
· Andrew Morris

What sub-15ms UK-to-UK actually sounds like on a call.

A network RTT number is not what your customers hear. What mouth-to-ear latency really is, where the milliseconds go, why 15ms vs 30ms is inaudible in healthy conditions, and why we still lead with it.

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Deadline 01 / 03
Jan 2027 BT PSTN switch-off
· Andrew Morris

Why January 2027 is the only telecoms date that actually matters.

The 2G sunset, ISDN Stop Sell, contract end dates — most telecoms “deadlines” are noise. The BT PSTN switch-off is the one hard network deadline UK businesses actually need to plan around, and eighteen months is shorter than it sounds.

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£
· Andrew Morris

What an honest 3CX quote looks like, line by line.

Most managed 3CX quotes are designed not to be compared. Here are the five real cost components, the opaque-bundle trick, the SC over-spec lever, and the five questions to ask before you sign.

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