OneNET Voice Call Service (VCS) API
语音通话 (Voice Call Service) is China Mobile's publicly documented voice capability on the OneNET gateway, reached at https://openapi.heclouds.com/vcs?action={voiceNotify|dialNotify}&version=2. Click to dial (点击拨号) connects a caller and a callee across the China Mobile network; voice notification (语音通知) plays an approved TTS template to a subscriber and can collect DTMF digits. Both return a call_id and both deliver call-status callbacks to a caller-supplied notify_url, with documented status and disconnect-reason enumerations. Click to Dial is the domestic first-party product behind the CAMARA Click to Dial API that China Mobile sponsors upstream with Huawei — the shipped product does not implement the CAMARA schema or its OIDC/CIBA security model. Access is gated three ways — business entitlement, a test account pinned to an approved source IP, and a trial-usage quota. Service numbers and TTS templates require qualification review before use.
OneNET Voice Call Service (VCS) API is one of 6 APIs that China Mobile publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Voice, Click to Dial, CAMARA, Network APIs, and China. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.
This API exposes 1 operation across 1 path, and defines 7 schemas. It is described by OpenAPI 3.1.0, at version 2.
Requests are made against a single base URL, https://openapi.heclouds.com.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
OneNET Voice Call Service (VCS) API declares
1 security scheme
for authenticating requests.
An API key is passed in the header as Authorization (onenetAuthorization).
onenetAuthorization— OneNET signed authorization token: version=2020-05-29&res=userid/{userid}&et={epoch}&method={md5|sha1|sha256}&sign={signature} where sign = base64(hmacmethod(b…
Paths & Operations 1
Across 1 path, the API surfaces 1 operation — 1 POST. Each is listed below with its method, path, parameters, and response codes.
语音通话 — voice notification and click-to-dial
Schemas 7
The contract defines 7 schemas that model the data the API accepts and returns. The most detailed are ClickToDialStatusEvent (9 properties), VoiceNotifyStatusEvent (8 properties), CallActionType (7 properties), CallEnvelope (5 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from China Mobile 5
Other APIs China Mobile publishes across the network.
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