Hosted numbers provide you with an easy method to enable messaging on voice-enabled numbers (including landline numbers) that you already own. You can also use this method to move messaging services to Sinch if you have already enabled them with a different provider. Hosting numbers allows you to use Sinch messaging service and leave your voice services as they are.
You can also port numbers over to Sinch to use both messaging services and voice services. If this is the case, see this article about submitting a Letter of Authorization to port numbers.
Note: The text-enablement process in the customer dashboard is only supported in United States and Canada.
To host and enable SMS messaging on an existing voice enabled number, log in to the Sinch Customer Dashboard and follow the steps outlined below:
Enter the campaign ID for the numbers want to enable for SMS. Click NEXT.
This step is optional. If you click SKIP to skip this step, then you can only enable for SMS those numbers which are not yet SMS enabled to prevent disruption to any of your existing numbers.
Friendly name |
This is optional but it is recommended you specify a name, so your request is easily identifiable. |
Region code |
The SMS enablement process is only available for United States and Canada. Select your region code from these two options. |
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Specify your enterprise (work) email address. Note: Personal email addresses (Gmail, Hotmail) are not supported. |
Campaign ID |
Before you can use a number to send any A2P messages you need a valid Campaign ID to show this is a valid approved A2P campaign. Select your Campaign ID from the drop-down list. If you do not have a Campaign ID or want to create a new one, click the Create campaign ID link to create one. Refer to the How to create a 10DLC Campaign article for details of how to do this.
If you do not specify a Campaign ID you can still host the number on Sinch, but the number will not be SMS enabled and cannot be used to send SMS until you add a campaign ID. Note: If your number has been previously text-enabled with a different provider, then skipping this step will interrupt your existing service. A campaign ID must be configured later to enable SMS. |
NNID |
A Net Number ID (NNID) is used to identify the service provider for a particular dialled number and also supports MVNO-OTT override data for text messaging for USA and Canada. This is optional. In most cases, you will not need to set this. Sinch will set this value for you to ensure proper message routing across all carriers. However, if do you have NNID(s) configured on your account you can select your desired NNID from the drop-down list. |
SMS app ID |
A Service Plan is assigned to you when you create an account on the Customer Dashboard - this is required to send messages using the SMS API. The SMS app ID is used to uniquely identify the Service plan. Note: SMS app IDs are referred to as Service Plan IDs on the SMS tab of the Sinch Customer Dashboard. Use your default SMS app ID or if you have more than one, select your SMS app ID from the drop-down list. |
LOA type |
Select one of the two options:
Note: If you select the reseller option then the letter of authorization will state that the contract is between you (the reseller) and your end customer. |
Current voice carrier |
Specify your current carrier you are using for voice services for the number you want to host on Sinch. Note: The LOA process will not affect your voice calling services and you may keep your numbers with your voice services provider without any porting required. |
The process is now complete. Your number is now listed in the hosted numbers section and is ready to use for sending SMS messages.
Note: On average, the hosting process will take a few minutes when you are attaching a number to an existing 10DLC campaign. However, if you are attaching the number to a new campaign, campaign approval is a manual process that protects against fraud and ensures compliance with messaging best practices. In most cases, it will take the Sinch team 1-3 days to review your campaign.
For information about managing your hosted numbers refer to the Managing your Hosted Numbers article.