If you want to use a Whatsapp phone number that is connected to an IVR system, you / your client must configure the phone number to receive WhatsApp phone verification code. The Whatsapp verification code can only be sent via
The WhatsApp number will receive an English speaking automated message with a 6-digit pin code.
sms (only supported for mobile phone numbers or number which can receive text messages)
The WhatsApp number will receive a message with a 6-digit pin code.
We will provide you with two sender IDs (usually US +1 or UK +44 numbers). The registration call will arrive on one of these sender IDs. You must use this information to create a whitelist or redirect for those numbers — so that once the call comes in, it is redirected to an employee or mailbox or receiver where the registration code will be captured.
We can give a 15 minute time window during which the registration call will be triggered. If you or your client has the option to temporarily disable the IVR system then the registration call can be received directly on the Whatsapp number provided.