Keeping your business numbers when you change phone providers

Keep the current phone service active while the receiving provider prepares the number transfer. Then give the change a named coordinator and a practical go-live plan. The number needs to reach a working destination, staff need to know how to answer it, and any texting service needs its own confirmation.

Start with the numbers and the carrier's records

List every number you intend to move and what it does: main line, direct line, fax or another service. Mark anything remaining with the old provider. Have the receiving provider check whether it can transfer those particular numbers before setting an internal launch date.

Collect the current account information and the authorization requested by the new provider. For wireline and VoIP requests, Bandwidth's porting guide distinguishes the service address from the billing address and stresses that submitted information must match the existing carrier's records. An address that looks right on an invoice may still need clarification.

If a request is rejected, ask which field or condition caused the rejection and have the coordinator obtain the correct record. Avoid repeatedly submitting guesses. Transfer credentials, account records and signed authorizations belong in the provider's secure intake process, not a widely shared planning document.

Ask whether broadband, an alarm or another service depends on a number being moved. Zoom's porting guidance identifies these as dependencies needing attention with the relevant provider. Get a specific plan for them before the transfer rather than treating all numbers as interchangeable voice lines.

Source: Bandwidth: Porting guide, account records and timing qualifications.

Source: Zoom: Best practices when porting numbers.

Build and try the destination while the request is being processed

Use the preparation period to confirm users, devices, business hours, greetings and missed-call handling. If the new provider offers a temporary number for testing, have staff use it to rehearse answering and transfers before relying on the public number.

Write down the approved destination for each transferred number. A correctly completed carrier transfer will not fix an unfinished call-routing plan. Include fax testing and any other agreed service checks; confirm emergency-location setup through the phone provider's approved process.

Ask the coordinator to distinguish a requested transfer date from one the providers have confirmed. Bandwidth publishes different intervals for different port types and says its quoted times are not guaranteed in every case. Your provider should explain the status of your order and any unresolved conditions, rather than turn a general estimate into a promised date.

Source: Bandwidth: Porting guide, account records and timing qualifications.

Confirm texting separately

If customers text the number, ask who currently carries the messaging service and what must happen for the new arrangement to work. A successful voice call is not a messaging test.

Zoom's SMS-porting guidance, for example, describes registration and campaign approval work and allows voice and SMS capabilities to be moved separately. It also warns of possible texting downtime. Those are product-specific procedures, so get the corresponding requirements and expected interruption from your chosen provider.

Decide how staff will handle customer messages during that interval and who will verify sending and receiving afterward. Do not announce that texting is ready solely because the number now rings on the new phones.

Source: Zoom: Porting phone numbers that use SMS.

Close the transfer with evidence

Have the coordinator, provider and designated staff available during the confirmed change window. Agree in advance how to reach support if the office number is not working and what temporary call-handling options the provider can support. Do not assume a failed transfer can be instantly reversed.

Once the provider reports completion, make ordinary inbound and outbound test calls and check the intended destinations, transfers, voicemail and separately scoped fax or texting. Record the time and result of any failed test so support can investigate it. Do not use emergency services as a test destination.

After completion is confirmed, review the old account with the previous provider. Zoom explicitly notes that it does not cancel that service on the customer's behalf. Verify remaining products, contract obligations, equipment returns and final charges before closing the account. Store the completion confirmation with the updated support contacts.

Source: Zoom: Best practices when porting numbers.