The phone numbers used for phone call alerting need to be in E.164 format. Stick to the following rules, and you’ll be fine:
- Prepend international access codes with a + sign
- Do not use any white spaces
- Use up to 15 characters
You can add as many phone number channels as you like.
Supported countries and regions
Phone call number and sender ID
Phone call alerts always use the following number: +18142508623. You can save the number as a contact to allow alerts bypassing any do-not-disturb settings.
You can contribute to this documentation by editing this page on Github