Turn WhatsApp into a high-performance voice channel

WhatsApp Business Calling allows businesses to make and receive voice calls directly inside WhatsApp conversations. Customers can move from chat to voice with a single click, without dialing numbers or switching apps.

Astroline operates as a specialized carrier between WhatsApp and your enterprise voice stack. When a customer starts a call from WhatsApp, the communication first reaches the WhatsApp Business platform and then passes through the Astroline Meta Carrier Platform. Our platform converts that interaction into a standard SIP session and delivers it into your Contact Center through a SIP Trunk.

The Astroline Meta Carrier Platform is a carrier-grade voice infrastructure layer that connects the WhatsApp calling ecosystem with enterprise telephony systems. It acts as the bridge between WhatsApp APIs and the SIP infrastructure used by modern Contact Centers.

Contact Centers are built on SIP-based voice infrastructure, while WhatsApp calls are delivered through data APIs. Astroline handles the protocol conversion and routing required so WhatsApp calls can behave like any other inbound voice interaction inside your Contact Center.

Yes. Once the call reaches the Astroline SIP Trunk, the agent receives it as a standard inbound call in the Contact Center platform. That means you can apply IVR, agent queues, recording, analytics and CRM integration without changing your core workflows.

Yes. The same number can receive both traditional phone calls and WhatsApp voice calls. This is managed through two parallel trunks: a PSTN trunk for conventional telephony and a dedicated WhatsApp trunk connected through the Astroline Meta Carrier Platform.

The PSTN trunk receives calls from the traditional telecom network, while the WhatsApp trunk handles calls initiated from the WhatsApp application. Both trunks can route calls into the same IVR or the same agent queues inside the Contact Center.

WhatsApp provides several advantages: • Customers already use the app every day • Calls come from a verified business identity • It creates a frictionless move from chat to voice • It works globally without dialing barriers • It builds more trust than an unknown phone number

Yes. Once the call enters the Contact Center through Astroline’s SIP Trunk, you can apply standard capabilities such as call recording, AI transcription, conversation analytics and CRM logging.

Yes. WhatsApp uses end-to-end encryption to protect communications. Once the interaction enters your Contact Center infrastructure, you can apply the same security and compliance policies used for traditional voice calls.

WhatsApp Business Calling is especially valuable for Contact Centers, BPOs, customer service teams, e-commerce brands, logistics businesses and companies operating across multiple markets.

To enable the service, you need an approved WhatsApp Business Platform account and voice infrastructure connected to a carrier capable of routing these calls into the Contact Center. Astroline provides the Meta Carrier Platform, SIP connectivity and the full onboarding process.