curl --request POST \
  --url https://qall.io/api/telephony/calls/initiate \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "to_phone_number": "<string>",
  "from_phone_number": "<string>",
  "variables": {},
  "welcome_message": "<string>"
}
'

import requests

url = "https://qall.io/api/telephony/calls/initiate"

payload = {
    "to_phone_number": "<string>",
    "from_phone_number": "<string>",
    "variables": {},
    "welcome_message": "<string>"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "call_sid": "<string>",
  "message": "<string>",
  "success": true,
  "provider_call_sid": "<string>"
}

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}