The 933 service

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Molly Katolas

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The 933 service is a courtesy text-to-speech service that Bandwidth offers as part of the 911 package. When an end user dials 933, it'll play back the TN and address that's provisioned in the Dashboard. This service is part of the 911 testing during the onboarding process, prior to the live 911 calls, and is used primarily to test connectivity to the emergency IPs for the 911 service. It also tests to make sure the provisioned address is being broadcast.

As with any text-to-speech service, there may be parts that aren't appropriately recognized and, therefore, skipped in the playback. The point to using the 933 service is to verify that:

  • Calls are reaching the SBCs
  • Some resemblance of the address provided in the Dashboard is represented

For example, if the 911 address entered is "123 N Main St, Ste 400, Denver, Colorado 80205", the 933 service would likely read back "123 Main, Denver, Colorado 80205". This would be considered a successful call. If it read back something entirely different, such as "2963 Stormy Ave, El Paso, TX", this would indicate a problem either with the 933 service or with the address in the Dashboard.

Although, the 933 service may be used anytime (please limit to 1 call per minute), it's a courtesy service and isn't meant to be used as a fully functional address verification service. To verify a full address, it's best to check the provisioned address in the dashboard directly (or via the API call).

For more information, please see our 911 integration guide.

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