I'm building AI voice agents for healthcare/medspa appointment booking and need to collect payments over the phone in a PCI-compliant way. I understand Retell has: PCI-DSS Level 1 certification Automatic card number redaction from transcripts Native Stripe integration Questions: Can you provide documentation on implementing voice payment collection with Retell? How do I create a payment function that pauses call recording during card collection? Does Retell have a built-in payment function, or do I need to build a custom webhook? What's the process for integrating Stripe for voice payments? Can you share sample code or implementation examples?