Open for CloudTalk

CloudTalk is a closed cloud call center — there's no externally exposed SIP. The integration pattern is call forwarding: in CloudTalk's Call Flow Designer, a step forwards specific calls to an external phone number that Open answers. CloudTalk stays in charge of users, numbers, dialers, and the dashboard.

Practically, you provision an Open inbound number, then add it as a forwarding step in your Call Flow Designer at the point you want AI to take over. CloudTalk passes the original caller's number through so the AI knows who it's talking to. Only the specific calls you've routed to AI take the detour.

What the AI does: it greets, listens, reasons over your knowledge base and connected tools (HubSpot, Salesforce, Pipedrive, Zendesk — plus the CloudTalk API for contact lookups), and acts. When the AI needs a human, it warm-transfers back to your CloudTalk team via PSTN bridge with the live transcript attached.

CloudTalk's analytics keep working for the legs CloudTalk handled. Open adds AI-side reasoning traces, transcripts, and outcome tags so you can compare resolution rate and AHT cleanly.

Billing stays predictable. CloudTalk continues to invoice your seats and the minutes for the legs it handles. Open charges per resolved conversation — no markup, no extra CloudTalk seats.