Keep a current business number, choose a new sender, or support voice and texting together only after confirming eligibility with the provider. This guide lays out the questions to resolve first.
No specific carrier, number type, migration timeline, or sending limit is confirmed for this concept.
Note each number’s type, carrier, voice use, texting needs, and who currently controls the account.
Check porting, shared access, voice, SMS/MMS, registration, and any use restrictions.
Get the migration plan, service-impact window, and throughput or usage limits in writing.
Number eligibility depends on the existing carrier, number type, voice configuration, destination, and messaging provider.
A shared business number can keep customer replies in one place. Dedicated numbers can separate brands, locations, or teams. The right choice depends on the customer experience and the product’s supported number model.
Confirm shared inbox and multi-number supportAsk whether the exact number can be enabled for messaging, whether it can be ported, and how existing calls will be handled during and after setup.
Eligibility must be checked with providerRequest the provider’s document checklist, expected transfer steps, timeline, and continuity plan. Keep service changes coordinated with both providers and wait for their explicit completion guidance.
Do not promise a migration date before provider confirmationSome configurations support voice and SMS together; others require separate routing or number types. Confirm inbound/outbound calling, caller ID, voicemail, and text handling for the exact number.
Voice and SMS compatibility is unconfirmedCheck whether MMS is supported, which file types and sizes are accepted, how attachments appear in the inbox, and how long they are retained.
Confirm media and retention behaviorRequest account-specific daily/monthly limits, throughput, segment counting, rate controls, and what happens when a campaign exceeds them.
No product limits have been suppliedFor U.S. application-to-person traffic on local 10-digit numbers, providers may require A2P 10DLC brand and campaign registration. Registration information, campaign purpose, consent flow, number association, and provider review can all matter. A registered campaign does not guarantee that every message reaches every recipient.