TelegramBOT Call by button?

Question

Python

Why is the error happening?

The code:

@bot.message_handler(commands=['call'])
def call(message):
  markup = types.InlineKeyboardMarkup()
  call = types.InlineKeyboardButton(text="Позвонить!", url="tel:[phone]")  # Ошибка в этой строке!

  markup.add(call)

  bot.send_message(message.chat.id, "Звонок...", reply_markup=markup)

Here is the log from the console:

2020-08-23 22:00:12,463 (util.py:68 WorkerThread2) ERROR - TeleBot: "ApiException occurred, args=('A request to the Telegram API was unsuccessful. The server returned HTTP 400 Bad Request. Response body:\n[b\'{"ok":false,"error_code":400,"description":"Bad Request: wrong HTTP URL"}\']',)
Traceback (most recent call last):
  File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\site-packages\telebot\util.py", line 62, in run
    task(*args, **kwargs)
  File "C:\Users\User\Desktop\Bots\bot.py", line 33, in start
    bot.send_message(message.chat.id, "Привет! Нажми на кнопку и перейди в поисковик.", reply_markup=markup)
  File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\site-packages\telebot\__init__.py", line 641, in send_message
    reply_markup, parse_mode, disable_notification, timeout))
  File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\site-packages\telebot\apihelper.py", line 166, in send_message
    return _make_request(token, method_url, params=payload, method='post')
  File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\site-packages\telebot\apihelper.py", line 69, in _make_request
    return _check_result(method_name, result)['result']
  File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\site-packages\telebot\apihelper.py", line 88, in _check_result
    raise ApiException(msg, method_name, result)
telebot.apihelper.ApiException: A request to the Telegram API was unsuccessful. The server returned HTTP 400 Bad Request. Response body:
[b'{"ok":false,"error_code":400,"description":"Bad Request: wrong HTTP URL"}']
"
2020-08-23 22:00:12,469 (__init__.py:455 MainThread) ERROR - TeleBot: "A request to the Telegram API was unsuccessful. The server returned HTTP 400 Bad Request. Response body:
[b'{"ok":false,"error_code":400,"description":"Bad Request: wrong HTTP URL"}']"

Answer 1

Either tg:// protocol or http
Alternatively, you can pass text like this in the message

bot.send_message(message.chat.id, "[Позвонить](tel:[phone])", parse_mode='Markdown')

Answer 2

The error itself says that wrong http url, you are trying to enter a phone number in the url, but you need a URL

Answer 3

I did not find anything similar in the Telegram Api and pyTelegramBotAPI documentation. In Google on this issue, I found only one mention - A button with a Telegram phone number
If you are too lazy to go, I will retell - they came up with a hack. Create a *.php file with content on your server header("Location: tel:[phone]");and pass a link to this file to the InlineKeyboardButton parameter in the url parameter. Of course, the web server must be running.