General service method

\Bitrix\MessageService\Sender\SmsManager::sendMessage

\Bitrix\MessageService\Sender\SmsManager::sendMessage([
	'SENDER_ID' => \Bitrix\MessageService\Sender\Sms\Ednaru::ID, // provider id
	'AUTHOR_ID' => $authorId, // sender user id at the account
	'MESSAGE_TO' => $phoneNumber, // recipient
	'MESSAGE_FROM' => $chanelId, // recipient channel id
	'MESSAGE_BODY' => 'Hello, your order is already on the way.',
]);