Zernio
Zernio
API Reference

WhatsApp

Templates

List templatesGETCreate templatePOSTGet templateGETUpdate templatePATCHDelete templateDELETEGet template by idGETUpdate template by idPATCHDelete template by idDELETELook up a library templateGET

Business Profile

Get business profileGETUpdate business profilePOSTUpload profile picturePOSTGet display name statusGETRequest display name changePOSTGet business usernameGETGet username suggestionsGETSet business usernamePOSTDelete business usernameDELETE

Groups

List active groupsGETCreate groupPOSTGet group infoGETUpdate group settingsPOSTDelete groupDELETEAdd participantsPOSTRemove participantsDELETECreate invite linkPOSTList join requestsGETApprove join requestsPOSTReject join requestsDELETE

Blocking

Check if a user is blockedGETList blocked usersGETBlock usersPOSTUnblock usersDELETE

Media

Download WhatsApp mediaGET

Commerce

List the catalogs linked to a WhatsApp numberGETLink a catalog to a WhatsApp numberPOSTUnlink a catalog from a WhatsApp numberDELETEGet a number's commerce settingsGETUpdate a number's commerce settingsPUT

Conversions

Get CTWA conversions datasetGETProvision CTWA datasetPOSTList conversion eventsGETSend WhatsApp conversion eventPOST

Account Events

List account notificationsGET

Phone Numbers

Get number statusGETRegister a connected WhatsApp number on the Cloud APIPOSTMove a number to another profilePATCHRequest a Meta re-verification code for a BYO WhatsApp numberPOSTVerify the Meta re-verification code for a BYO WhatsApp numberPOST

Calling

Get calling config for an accountGETEnable calling on a numberPOSTUpdate calling configPATCHDisable calling on a numberDELETECheck call permissionGETList call history for an accountGETInitiate outbound callPOSTGet a single callGETEstimate per-minute costGETGet calling config for a numberGETGet a call recordingGETStart caller-ID verification for a customer-brought numberPOSTConfirm the caller-ID verification codePOST

Flows

List flowsGETCreate flowPOSTGet flowGETUpdate flowPATCHDelete flowDELETEGet flow JSON assetGETUpload flow JSONPUTGet flow preview URLGETList flow versionsGETPublish flowPOSTDeprecate flowPOSTSend flow messagePOSTList flow responsesGETGet Flows encryption key statusGETRegister a Flows encryption keyPOST

Sandbox

List your sandbox sessionsGETStart a sandbox activationPOSTRevoke a sandbox sessionDELETE

Other

Get pricing analyticsGET
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OverviewPlatformsAPI ReferenceResources
WhatsApp

Update calling config

Update fields on an already-enabled number. Only fields present in the body are written; undefined leaves the stored value alone, explicit null clears a nullable field. No Meta side effect, this only changes local routing state consumed by the Telnyx webhook handler.

PATCH
/v1/phone-numbers/{id}/whatsapp/calling

Authorization

bearerAuth
AuthorizationBearer <token>

API key authentication: send your Zernio API key in the Authorization header, prefixed with Bearer.

In: header

Path Parameters

id*string

Request Body

application/json

TypeScript Definitions

Use the request body type in TypeScript.

Response Body

application/json

import Zernio from '@zernio/node';const zernio = new Zernio({ apiKey: process.env.ZERNIO_API_KEY });const { data } = await zernio.whatsappcalling.updateWhatsAppCalling({  path: {    id: 'abc123',  },  body: {    accountId: 'account_abc123',  },});console.log(data);
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Enable calling on a number

Enable WhatsApp Business Calling on a connected number. Configures Meta calling.status=ENABLED with our Telnyx SIP endpoint, fetches and stores the Meta-issued SIP password (encrypted), and snapshots the customer's forward-to destination.

Disable calling on a number

Disable calling. Sends calling.status=DISABLED to Meta (best-effort) and flips the local `callingEnabled` flag off. forwardTo and SIP creds are preserved so a re-enable does not lose the destination.

accountId*string
forwardTo?string
sipAuthUsername?string|null
sipAuthPassword?string|null
recordingEnabled?boolean
callIconCountries?array<>|null
maxCallDurationSeconds?|

Hard cap (seconds) on forwarded calls; null clears the cap.

Range30 <= value <= 14400
forwardCallerId?string

caller = present the WhatsApp user's number to the forward destination (sip: only).

Value in

  • "business"
  • "caller"