# NFON > NFON AG is a European cloud telephony and unified-communications provider (Cloudya). For developers it publishes RESTful JSON APIs from the NFON-AG GitHub organisation: the PBX Configuration API, the CTI API, and the Call History API (Login with NFON). All APIs use Authorization Bearer JWT; access is provisioned via integration@nfon.com and is free of charge. ## APIs - [NFON PBX Configuration API](https://www.nfon.com/en/integrations/api): OAuth 2.0, ~480 operations to provision tenants, extensions, devices, phone books, queues, groups, IVR, licences and more. Base https://api.nfon.net/configuration/v1 - [NFON CTI API](https://www.nfon.com/en/integrations/cti-api): Server-to-server call control and SSE call/state streaming. Base https://providersupportdata.cloud-cfg.com/v1 - [NFON Call History API](https://www.nfon.com/en/integrations/login-with-nfon/): Retrieve, stream and delete call records with AI transcriptions and summaries (early access). Base https://api.nfon.com/call-history - [NFON Service Portal API (legacy)](https://github.com/NFON-AG/Service-Portal-API): Deprecated; superseded by the PBX Configuration API. ## Specs - [PBX Configuration OpenAPI](https://api.nfon.net/configuration/api/openapi.json) - [CTI API OpenAPI](https://raw.githubusercontent.com/api-evangelist/nfon/refs/heads/main/openapi/nfon-cti-api-openapi.yml) - [Call History OpenAPI](https://raw.githubusercontent.com/api-evangelist/nfon/refs/heads/main/openapi/nfon-call-history-api-openapi.yml) - [Service Portal Postman collection](https://raw.githubusercontent.com/api-evangelist/nfon/refs/heads/main/postman/nfon-service-portal-api.postman_collection.json) ## Docs - [API landing page](https://www.nfon.com/en/integrations/api) - [CTI API reference](https://nfon-ag.github.io/CTI-API/) - [Call History API reference](https://nfon-ag.github.io/Call-History-API/) - [PBX Configuration interactive docs](https://api.nfon.net/configuration/) - [PBX migration guide](https://github.com/NFON-AG/PBX-Configuration-APIs/blob/main/api-gateway-migration-guide.md) - [NFON-AG GitHub organisation](https://github.com/NFON-AG) ## Operations & Support - [Status page (API Breaking Changes)](https://status.nfon.com) - [Partner Portal](https://partners.nfon.com/) - [Trust Center (BSI C5)](https://www.nfon.com/en/trust-center/) - [Terms of Service / SLA](https://www.nfon.com/en/legal/gtc-sla/) - Access requests: integration@nfon.com