def call(self, phone_number, message, message_type, **params):
return self.post(VOICE_RESOURCE,<EOL>phone_number=phone_number,<EOL>message=message,<EOL>message_type=message_type,<EOL>**params)<EOL>
Send a voice call to the target phone_number.

See https://developer.telesign.com/docs/voice-api for detailed API documentation.