ISmsCenter::sendMessage

public function sendMessage(array $messageFields)
{
	if (!$this->canUse())
	{
		$result = new SendMessage();
		$result->addError(new Error('Service is unavailable'));

		return $result;
	}

	$message = [
		'from' => $messageFields['MESSAGE_FROM'],
		'to' => str_replace('+', '', $messageFields['MESSAGE_TO']),
		'text' => $this->prepareMessageBodyForSend($messageFields['MESSAGE_BODY']),
		'notify_url' => $this->getCallbackUrl()
	];

	$result = new SendMessage();
	$apiResult = $this->sendApiRequest('send', $message);

	if (!$apiResult->isSuccess())
	{
		$result->addErrors($apiResult->getErrors());
	}
	else
	{
		$smsData = $apiResult->getData();
		$smsId = $smsData['message_id'];

		if (!$smsId)
		{
			$result->addError(new Error('Service error.'));
		}
		else
		{
			$result->setExternalId($smsId);
			$result->setAccepted();
		}
	}

	return $result;
}