A virtual number can be assigned to an existing SMS service plan. This is the number recipients will see when the service plan sends an SMS message. You can also change the virtual number that is assigned to an existing service plan.
To assign a number to a service plan:
- Log in to the Sinch Customer Dashboard.
- Select Numbers from the left menu and select the Your virtual numbers option. The Your virtual numbers page is displayed:

Click the number to be associated with the service plan.
- The configuration options for the number are displayed:

Navigate to the SMS configuration section and click EDIT.
- A drop-down list of existing service plan IDs is displayed:

Select the appropriate service plan ID and click SAVE.
In addition to assigning a virtual number to an existing SMS service plan, you can set the callback URL for an SMS service plan.