import Telnyx from 'telnyx';

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

const notificationChannel = await client.notificationChannels.retrieve(
  '182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e',
);

console.log(notificationChannel.data);

{
  "data": {
    "id": "12455643-3cf1-4683-ad23-1cd32f7d5e0a",
    "notification_profile_id": "12455643-3cf1-4683-ad23-1cd32f7d5e0a",
    "channel_type_id": "sms",
    "channel_destination": "+13125550000",
    "created_at": "2019-10-15T10:07:15.527Z",
    "updated_at": "2019-10-15T10:07:15.527Z"
  }
}