Changing internet phone service works best when you treat the telephone number, the new calling setup and the old account as three separate tasks. Confirm that the new provider can accept your number, prepare the destination before the transfer, then test the services you actually use before closing anything left behind.
This checklist is for an account holder planning a provider change. The regulatory reference is United States guidance; elsewhere, use your local regulator and the receiving provider's country-specific process. Have a recent bill, the authorized account contact and an inventory of every number and bundled service available.
Prepare the number inventory
The FCC's number-porting guide directs customers to start with the new company and keep existing service active when initiating the change. It also identifies geographic and other limits to portability. Ask the receiving provider to check the exact number before ordering equipment or announcing a switch date.
Record the account name and service address exactly as the current provider holds them. Ask which account number, transfer PIN, authorization and supporting documents the receiving provider requires. Share these through its authenticated process; keep passwords and PINs out of a general planning worksheet. If a request is rejected, obtain the specific mismatch and correct that field instead of submitting competing requests.
Swipe horizontally, or focus the table and use the arrow keys.
| Item | Question | Evidence to keep |
|---|---|---|
| Each telephone number | Can this provider accept it in this service and location? | Written eligibility result and requested destination |
| Partial account transfer | What happens to numbers, broadband and discounts that stay? | Old provider's account-change instructions |
| Features | Are messaging, fax, voicemail and caller identification included? | Separate feature confirmation and test plan |
| Timing | When is the agreed transfer window, and who handles a failed transfer? | Confirmation, time zone and escalation contact |
Build a controlled transition
Set up the new account and supported endpoint first. If available, use a temporary number to test incoming and outgoing calls. Configure the destination of the transferred number: a handset, ring group, menu or voicemail box. Export messages or contacts you need using the old service's supported tools. A number transfer does not carry your application settings with it.
Provider workflows differ. For example, Twilio's documented US port-in workflow separates eligibility, authorization, submission, carrier review and scheduling. Its API documentation is marked public beta and has a particular number scope; use it as an illustration of the stages, then follow your chosen provider's actual customer process.
The FCC describes a one-business-day processing requirement for simple ports, with qualifications. Your requested date, account preparation and service activation still need confirmation. Ask about transition effects on emergency calling and the provider-approved way to verify the registered address. Do not place an unarranged test call to an emergency number.
Fictional two-number move
A small studio moves its main number but keeps a second line and broadband with the old company. Before submission, its manager gets written confirmation of the remaining account arrangement. The new provider supplies a temporary test number. On the agreed morning, the manager checks the main number from two outside networks, then tests the second line and broadband. This sequence is a planning example, not a promised port duration.
Verify the switch and close the loop
- Check each number individually. Confirm its transfer status and inbound destination; a batch summary can hide an exception.
- Exercise ordinary calls. With consenting contacts, test inbound calls from more than one network, outbound calls, two-way speech, displayed number, voicemail and menu digits.
- Check separate services. Verify messaging or fax if contracted, remaining old-account services, and emergency-address registration through the provider's supported process.
- Keep an incident record. For failures, save timestamps with time zone, calling and called numbers privately, symptoms and request identifiers. Ask the receiving provider to investigate the affected route.
- Reconcile the old account. Confirm what closed automatically, what remains billable, equipment return requirements and the final bill. Cancel only the services you intend to end after their disposition is confirmed.
If activation slips, use the alternate contact route agreed before the window. Reversing a port is another provider-managed process, so keep a working temporary contact instead of assuming an instant rollback.
Keep a transfer record
Download the number-transfer worksheet and keep one acceptance row per number. For choosing the service itself, start with VoIP provider evaluation; for bundled dependencies, use broadband and voice bundle planning.