@Sigurd
To display the user's number when forwarding a call to a phone center, you need to ensure that the call forwarding system or Voice API you're using supports sending the original caller's number (often referred to as the Caller ID) to the destination phone.
Here's what you can do:
1. Check if your Voice API has a feature to forward the original Caller ID. This might be a setting you can enable.
2. If the feature exists, configure the forwardingPhoneNumbers attribute to include the user's number as the Caller ID.
3. Update your CRM system to recognize and automatically look up information based on the Caller ID.
If you're unsure how to configure this or if the feature is supported, please reach out to the support team of your Voice API provider for more detailed assistance. They can provide you with specific instructions based on their system's capabilities.