Empower Your CX with WhatsApp Business Calling

WhatsApp Business Calling allows companies to make and receive voice calls directly within WhatsApp conversations. Customers can move from chat to voice with a single tap, creating a seamless communication experience inside the world’s most widely used messaging platform.

Astroline acts as a specialized Meta voice carrier between WhatsApp and your contact center platform. When a customer initiates a WhatsApp voice call, the call first reaches the WhatsApp Business Platform and then flows through Astroline’s Meta Carrier Platform. Our platform converts the WhatsApp voice session into a standard SIP call and routes it through an SIP Trunk to your CCaaS platform such as Genesys, Talkdesk, Zendesk or Microsoft Teams.

The Astroline Meta Carrier Platform is a carrier-grade infrastructure layer that connects the WhatsApp Business voice ecosystem with enterprise telephony environments. It acts as the bridge between WhatsApp APIs and traditional voice infrastructure, translating WhatsApp voice sessions into SIP calls that can be handled by any contact center or PBX.

Contact centers operate using SIP telephony infrastructure, while WhatsApp calls are delivered through data-based APIs. Astroline’s Meta Carrier Platform performs the necessary protocol conversion and routing logic, allowing WhatsApp voice calls to behave exactly like traditional inbound calls within your existing contact center workflows.

Yes. Once the call is delivered through the Astroline SIP Trunk, your agents receive the interaction as a standard inbound call in their contact center platform. This means you can apply your existing IVR flows, routing rules, call recording, analytics, and CRM integrations without any changes to the agent experience.

Yes. A single phone number can receive both traditional PSTN calls and WhatsApp calls. This is achieved by configuring two parallel trunks: a PSTN trunk for traditional phone calls and a dedicated Astroline WhatsApp voice trunk connected through the Meta Carrier Platform. Both channels operate independently but can terminate on the same contact center infrastructure.

The PSTN trunk handles traditional voice calls from the public telephone network, while the WhatsApp voice trunk handles calls initiated from the WhatsApp application. Astroline manages the routing so both call types can reach the same IVR or agent queues within the contact center platform.

WhatsApp voice calls offer several advantages for enterprises: • Customers already use WhatsApp daily • Calls originate from a verified business profile • Seamless transition from messaging to voice • Global reach without international dialing barriers • Higher engagement compared to unknown phone numbers

Yes. Once the call reaches the contact center through the Astroline SIP trunk, all standard telephony features remain available, including call recording, AI transcription, conversation analytics, sentiment analysis and CRM logging.

Yes. WhatsApp communications use end-to-end encryption, ensuring that voice calls remain private between the customer and the business. When the call is delivered to the enterprise contact center, it follows the same enterprise-grade security and compliance policies as traditional voice calls.

WhatsApp Business Calling is particularly valuable for contact centers, BPOs, customer support teams, logistics companies, e-commerce businesses and financial services organizations that interact with customers globally.

To enable WhatsApp voice capabilities, companies must have an approved WhatsApp Business Platform account and integrate their infrastructure with a voice carrier capable of routing calls into their contact center environment. Astroline provides the Meta Carrier Platform, SIP trunk connectivity and onboarding support required to deploy WhatsApp calling at enterprise scale.