import Telnyx from 'telnyx';

const client = new Telnyx({
  apiKey: process.env['TELNYX_API_KEY'], // This is the default and can be omitted
});

const callingSetting = await client.whatsapp.phoneNumbers.callingSettings.retrieve('phone_number');

console.log(callingSetting.data);

{
  "data": {
    "record_type": "whatsapp_calling_settings",
    "phone_number": "<string>",
    "updated_at": "2023-11-07T05:31:56Z",
    "enabled": true
  }
}