Field guide

POTS replacement for buildings.

Fourteen pages on replacing the copper lines in a commercial building: the timeline, the four migration paths and when each one is right, real pricing ranges, a per-line audit checklist you can walk a property with, and the mistakes that turn a clean migration into an expensive one.

What is in it

  • The four dates that actually matter, and which one governs your address.
  • Why the carrier's notice does not mention NFPA 72 or ASME A17.1, and what that leaves you responsible for.
  • The four migration paths compared — cellular, hosted VoIP, analog over fiber, FXS gateway — with what each is genuinely good and bad at.
  • Pricing ranges per path: hardware, monthly, install, porting.
  • A decision matrix that maps a scenario to a path. Fire panel, elevator phone single building, elevator phones across four or more cars, high-volume fax, and so on.
  • A per-line audit checklist. What to inventory, what to record for each line, and the risk questions to ask before you quote anything.
  • Eight common mistakes, including the two that cost the most: assuming a device is certified for life-safety, and waiting for the carrier's notice before planning.
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