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Meta’s WhatsApp Cloud API now supports Calling via SIP. This guide shows you how to enable SIP, fetch credentials, create a secure PJSIP trunk, and route calls in Asterisk/FreePBX. Includes firewall tips, a clean inbound context, and quick troubleshooting for codecs, TLS/DTLS, and NAT.

Before you can manage your WhatsApp Business profile and calling/SIP settings, you must have your WhatsApp account registered with the Meta Cloud API.The easiest way to get started is to sign up with an official provider such as: ORENCloud — Malaysia’s first provider to offer full WhatsApp Chat + Calling in one platform. Twilio —