CCrmActivityRestProxy::processMethodRequest

public function processMethodRequest($name, $nameDetails, $arParams, $nav, $server)
{
	$name = mb_strtoupper($name);
	if($name === 'COMMUNICATION')
	{
		$nameSuffix = mb_strtoupper(!empty($nameDetails)? implode('_', $nameDetails) : '');
		if($nameSuffix === 'FIELDS')
		{
			$fieldsInfo = $this->getCommunicationFieldsInfo();
			return parent::prepareFields($fieldsInfo);
		}
	}
	return parent::processMethodRequest($name, $nameDetails, $arParams, $nav, $server);
}