What happens to your fax number when the copper line goes

The copper line is going, and the fax number on it does not have to go with it. In March 2026 the FCC adopted an order that removes most of the process a carrier used to follow before retiring copper or grandfathering the voice service on it. For a practice, the practical question is not the network. It is the number, and who signs the agreement for the service that replaces the line.

What the FCC changed

The Commission's fact sheet for the Network and Services Modernization Order, dated March 5, 2026, lists what the order does. Three items matter to a small office with a fax machine.

• It eliminates "all filing requirements in the Commission's network change disclosure rules." Those filings were the public trail a copper retirement used to leave.
• It grants "blanket section 214(a) authority for carriers to grandfather legacy voice services, lower-speed data telecommunications services, and interconnected VoIP service provisioned over copper wire." Grandfathering means the carrier can stop selling the service to new customers and stop adding features, while existing customers keep it for now.
• It applies "the 31-day automatic grant period to all discontinuance applications," while the Commission keeps the ability to pull an application out of the fast-track process if it raises concerns.

The order was adopted at the Commission's March 26, 2026 meeting as FCC 26-19. The upshot is that a carrier's plan for a given copper line can move faster than it used to, and the notice a practice receives may be the first it hears of it.

What it means for the fax machine

A fax machine on a copper line depends on that line. When the line is grandfathered, nothing changes on the day of the notice. When the line is discontinued or the copper is retired, the machine stops. The number is a separate matter.

A fax number is a telephone number, and telephone numbers port. The rule of thumb every telecom migration follows applies here: move the number while the old line still works. A port from a live line is routine; recovering a number after the line is disconnected is not always possible.

Online fax replaces the machine and the line with a number that answers in a browser or by email. The practice keeps its number, staff send from a computer, incoming faxes arrive as documents, and nothing sits on a desk waiting for a dial tone.

Who signs the agreement

This is the part that lands on the IT provider's desk, and it deserves a plain answer.

A practice that handles protected health information needs a Business Associate Agreement with any vendor that transmits that information for it. A fax service is such a vendor. The practice is the covered entity, so the practice signs.

If an IT provider resells a fax service to the practice under its own name, the arrangement changes. The provider becomes the practice's business associate for the fax service, and the fax vendor becomes the provider's subcontractor. The provider then owes the practice an agreement and must obtain one from the vendor. That paperwork is the provider's, and it stays the provider's for as long as the arrangement lasts.

If the provider refers the practice instead, and the practice signs up in its own name, the practice signs the agreement directly and the provider is not in the chain.

At Fax Pigeon the agreement is signed inside checkout on every plan, including the free first send, and the full text is public at faxpigeon.com/baa before anyone pays. A provider can read it, hand the link to the practice, and close the item.

What it costs

Fax Pigeon plans run from $4.99 a month billed annually for 200 pages to $159.99 a month billed annually for 10,000. Every plan carries every feature: the practice's own number or a free port in, unlimited people at no per-seat charge, fax by email, a summary written on every incoming fax, e-signatures, cover sheets and delivery proof. The plans differ only in pages a month.

Read at their own pricing pages on September 5, 2026, the competitors' plans that carry a signed agreement start at $12.60 a month at SRFax and run to $99.99 at Fax.Plus.

One honest concession. A practice whose EHR already bundles enough fax pages, or a prescriber who qualifies for Doximity's free fax, may have no reason to move. The copper retirement does not change that arithmetic. It only removes the machine that was pretending the question had not been asked.

Who this is for

A small office whose fax machine sits on a copper line and whose IT provider has received, or expects, a carrier notice. A provider planning a POTS migration for a clinic this quarter, who needs a one-sentence answer for the fax line. A practice that would rather move the number on its own schedule than on the carrier's.

Who should look elsewhere: a hospital department with a fax server and a contract, and a practice whose required software already carries the fax line at a price it is happy with.

See the plans, or read the agreement first at faxpigeon.com/baa.

Fax Pigeon is not affiliated with the FCC or with any carrier. The FCC fact sheet was read at source on September 8, 2026. Competitor prices were read at their own pages on September 5, 2026.