At a glance
Where the copper shutdown actually stands
There is no single national switch-off date, which is exactly why this one is hard to plan around. What exists is a regulatory framework that got substantially easier for carriers in 2026, plus carrier-by-carrier discontinuance filings that each cover specific wire centers.
| Item | What changed | Date / status |
|---|---|---|
| FCC Network and Services Modernization Order (FCC 26-19) | Adopted unanimously; overhauls technology-transition discontinuance rules | March 26, 2026 |
| Network-change disclosure filings | Filing requirements eliminated; carriers still post public notice | In effect under FCC 26-19 |
| Grandfathering legacy voice, sub-25/3 data, and copper VoIP | Blanket section 214(a) authority — customer notification instead of an application | In effect under FCC 26-19 |
| Discontinuance applications | 31-day automatic grant period, with the ability to pull an application from streamlined processing | In effect under FCC 26-19 |
| AT&T legacy TDM voice discontinuance (WC Docket 26-73) | Requested authority covering roughly 90,000 customers across portions of wire centers in 18 states | Requested on or after November 15, 2026 |
| Discontinuance authorization itself | Still required — incumbents must obtain FCC authorization for a discontinuance resulting from copper retirement | Unchanged |
Primary sources: the FCC's Network and Services Modernization Order (FCC 26-19) and the accompanying news release, and the FCC's public notice on the section 214 technology-transition discontinuance application. Carrier timelines vary by wire center and change as filings progress — verify your own addresses against your carrier's notices rather than any published summary, including this one.
Take an inventory first
What a contact center still has on copper
Most organizations underestimate this, because the lines that remain are the ones nobody thinks about — they were installed once, they have worked for twenty years, and they are not on anyone's system diagram. A realistic audit usually finds:
- Analog trunks into a legacy PBX. The direct case: an aging on-premises phone system fed by POTS or PRI, where the carrier's transition forces a platform decision you were deferring.
- Fax lines. Still load-bearing in healthcare, insurance, legal, logistics, and anywhere order confirmations move on paper. Frequently the single largest count in the inventory.
- Elevator and area-of-refuge phones. Life-safety, code-mandated, and inspected. These cannot lapse during a transition.
- Fire alarm and burglar alarm communicators. Often on dedicated copper with their own monitoring contracts and their own code requirements.
- Overhead paging and door entry. Small in number, disproportionately noticed when they stop working.
- Point-of-sale, ATM, and card terminals. Legacy dial backup that still fails over to copper.
- Out-of-band management lines. The modem line into the router or PBX that exists precisely so you can reach it when the network is down.
- Courtesy and emergency phones. Lobbies, parking structures, and remote facilities.
Build this list before you price anything. The count and the mix determine which replacement approach makes sense, and the exercise routinely surfaces lines that are billed monthly but no longer connected to anything — a cost saving that sometimes funds a meaningful share of the project.
What March 2026 changed
The regulatory friction is mostly gone
For years, copper retirement moved slowly because the process was procedurally expensive for carriers. The FCC's Network and Services Modernization Order, adopted March 26, 2026, removed most of that friction.
- Network-change disclosure filings are gone. Carriers still post public notice of planned changes, but no longer file the duplicative paperwork with the Commission.
- Grandfathering no longer needs an application. Blanket section 214(a) authority now lets carriers grandfather legacy voice, lower-speed data below 25/3 Mbps, and interconnected VoIP provisioned over copper, using customer notification instead of a filing.
- Discontinuance applications are streamlined. One consolidated rule now covers all technology-transition discontinuance applications, with a 31-day automatic grant period — though the Commission retains the ability to pull an application out of streamlined processing if it raises concerns.
- Authorization is still required. This is the part summaries get wrong. Incumbent carriers still need Commission authorization for a discontinuance that results from copper retirement; what changed is how fast and how cheaply they can get it.
The practical effect for a buyer is that the timeline is now set by your carrier's commercial priorities rather than by regulatory drag. Whatever internal date you had penciled in based on how slowly this moved from 2019 to 2024 is no longer a reliable guide.
Get a real date
How to find out when your lines go
Nobody will hand you a single answer, but four checks between them will give you a usable picture:
- Read the notices you already received. Grandfathering and discontinuance notices arrive by mail and on invoices, and they are written to be forgettable. Check with accounts payable, not just IT.
- Ask your carrier rep for the wire centers. Discontinuance filings are scoped to specific wire centers, so the question is which serve your addresses and whether they appear in a filing. Ask in writing.
- Try to place an order. The fastest real-world test: attempt to add an analog line at each site. A refusal means that location is already grandfathered whatever the paperwork says.
- Watch the docket. Discontinuance applications are public. If your carrier has filed, the requested effective date and the affected wire centers are in the filing.
Do this per site, not per organization. A multi-site operation frequently sits across several wire centers with different dates, and planning to the earliest one is the only version that does not require a second project later.
Decision point
What replaces a POTS line
There is no single replacement, because the lines do different jobs. Most organizations end up using two or three of these:
SIP trunks to the existing PBX
The minimum-change option: keep the phone system, replace the copper underneath it. Sensible when the PBX itself is current. If it is not, you are paying to extend the life of a system with its own end-of-life date.
Full move to cloud voice
Replace the phone system and the lines together with UCaaS for employees and CCaaS for the contact center. More project, but it retires the copper problem and the PBX lifecycle problem in one funded effort.
Managed analog replacement
Purpose-built devices that present an analog port to the alarm panel, elevator, or fax machine while carrying the call over cellular or broadband. The standard answer for life-safety and other lines that must stay analog.
Retire the line entirely
Cloud fax for fax, IP-based monitoring for alarms, mobile for courtesy phones. The cheapest replacement is the one you do not buy — but only where the code and the contract actually allow it.
For a contact center specifically, the honest observation is that a carrier-forced transition is a poor reason to spend money on preserving a legacy platform. If the copper feeding your PBX is going away and the PBX is also approaching its own end of support — which describes most estates in this position — the two projects should be one decision. Our PBX end-of-life hub covers the vendor dates that usually turn out to be the binding constraint.
Do not improvise this part
Life-safety and E911 obligations travel with you
Replacing a line that dials 911 is not a like-for-like swap, and the obligations are federal rather than optional. Two rules apply to multi-line telephone systems:
- Kari's Law requires direct 911 dialing with no prefix, plus notification to an on-site point of contact when a 911 call is placed. It applies to MLTS manufactured, imported, sold, leased, or installed after February 16, 2020.
- RAY BAUM'S Act section 506 requires a dispatchable location — a validated street address plus the suite, floor, or similar detail needed to find the caller — to be delivered with the call. The compliance dates were January 6, 2021 for fixed MLTS and January 6, 2022 for non-fixed.
A copper replacement project touches both. Any device presenting an analog port to a legacy handset, and any softphone or cloud seat replacing a desk phone, needs its dispatchable location configured and tested — and for cellular-based analog replacements, the location the carrier delivers is not automatically the location of the equipment. Test a real 911 call from each site with the PSAP's non-emergency line arranged in advance, and keep the record. Elevator and area-of-refuge phones carry separate code requirements from your local authority having jurisdiction, and those are not waived because the underlying line technology changed. Our public sector guide covers the adjacent compliance ground for government buyers.
Work backward from the date
A realistic transition sequence
For a multi-site organization with a legacy PBX and a meaningful analog inventory, plan on six to twelve months. The sequence that avoids rework:
- Months 1–2: inventory and dates. Every line, its purpose, its site, and its monthly cost, cross-referenced against carrier notices and wire centers. Cancel what is genuinely dead.
- Months 2–3: decide the architecture. Which lines get SIP, which get managed analog replacement, which get retired, and whether the PBX itself is in scope. This is where the CCaaS decision belongs if the contact center is affected.
- Months 3–5: procurement and design. Competing quotes, security review, and an E911 plan per site. Confirm alarm and elevator monitoring vendors will certify the replacement — this approval is a common late blocker.
- Months 4–8: migrate in waves, by site. Port numbers in batches, keep the copper live until each wave is verified, and test 911 from every site before decommissioning anything.
- Ongoing: verify the bill. Copper lines have a habit of continuing to bill after they are disconnected. Reconcile invoices against the inventory for several months afterward.
The pacing items are number porting and third-party certification, not the technology. Both run on someone else's calendar, which is why starting them early is worth more than any amount of internal urgency later.
Budget lines
What the transition actually costs
The comparison that matters is not device price against line price — it is your current all-in copper bill against the replacement, including the work:
- Current spend, honestly counted. Copper line rates have risen sharply as carriers price for retirement, and the total is usually spread across several invoices and cost centers. Add them up before deciding anything is expensive.
- Replacement hardware and connectivity. Per-line devices for analog replacement, plus their cellular or broadband service.
- Installation and truck rolls. Multi-site rollouts are priced per visit, and remote sites cost more than the equipment does.
- Alarm and elevator vendor certification. Frequently billable, occasionally the long pole in the schedule.
- Number porting and contract unwinding. Check early-termination clauses before you set a cutover date.
- Platform replacement, where the PBX is in scope. If this project becomes the voice migration, the seat costs in our CCaaS pricing guide are the right starting point.
Where the phone system moves too, list prices are a starting point: with competing quotes and term negotiation, mid-market and enterprise deals routinely close 15–30% below list, and implementation credits are often easier to win than rate reductions. Start with a quick estimate of your seat mix, and read what CCaaS is if the category is new to you.
FAQ
Quick answers
Is there a single date when POTS lines are switched off nationally?
No, and anyone quoting one is guessing. Copper retirement happens carrier by carrier and wire center by wire center, through discontinuance filings that each cover specific locations. AT&T has requested authority to discontinue legacy TDM voice on or after November 15, 2026 for roughly 90,000 customers across portions of wire centers in 18 states, and other filings will follow on their own schedules. Your date depends on your addresses.
What did the FCC actually change in March 2026?
The Network and Services Modernization Order, adopted March 26, 2026, eliminated network-change disclosure filing requirements, granted blanket section 214(a) authority so carriers can grandfather legacy voice, sub-25/3 data, and copper-provisioned VoIP through customer notification instead of an application, and consolidated technology-transition discontinuance rules with a 31-day automatic grant period. Carriers still need Commission authorization for a discontinuance resulting from copper retirement — it is just faster and cheaper to obtain.
How do I find out when my lines are affected?
Four checks: read the grandfathering and discontinuance notices you have already received, which often arrive with invoices rather than as letters to IT; ask your carrier rep in writing which wire centers serve your addresses and whether they appear in a filing; try to order a new analog line at each site, since a refusal proves the location is grandfathered regardless of the paperwork; and check the public docket for your carrier's filings. Do this per site, because a multi-site operation usually spans several wire centers with different dates.
What happens to our fax lines?
Fax is usually the largest count in the inventory and the easiest to solve. Cloud fax services replace the line entirely for most use cases, and where a physical machine must stay, a managed analog replacement device presents an analog port over cellular or broadband. The exception is anywhere a contract or regulator specifically requires a dedicated line — check before assuming.
What about elevator phones, fire alarms, and other life-safety lines?
These need a documented replacement, not an improvised one. Managed analog replacement devices are the standard answer, but your alarm and elevator monitoring vendors generally need to certify the replacement, and your local authority having jurisdiction may have its own requirements. That certification is frequently the longest lead time in the whole project, so start it first rather than last.
Do we have new 911 obligations when we replace these lines?
The obligations are not new, but a replacement project is when they get tested. Kari's Law requires direct 911 dialing without a prefix plus on-site notification, and RAY BAUM'S Act section 506 requires a dispatchable location — a validated street address plus suite or floor detail — to be delivered with the call. Any replacement device or cloud seat needs its location configured and verified, and for cellular-based replacements the carrier's default location is not necessarily where the equipment sits. Test a real 911 call from every site and keep the record.
Should we just replace the phone system at the same time?
Often, yes. Most organizations still on copper are also running an on-premises PBX approaching its own end of support, and paying to re-plumb a system you will replace in two years is money spent twice. If both are true, treat it as one funded decision — the PBX end-of-life hub covers the vendor dates that usually turn out to be the real constraint.
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