Request/XcdrRequest.php
public function SolicitXcdrProbing($msgHeader, $sequence, $interval, $failureCount, $registered, $providerStatus)
    {
        $responseXml = $this->probing($msgHeader, $sequence, $interval, $failureCount, $registered, $providerStatus);
        $response = $this->listener->processProbing($this, $responseXml);

        if (!$this->isValid()) return;
        return $response;
    }
public function SolicitXcdrProbing($msgHeader, $sequence, $interval, $failureCount, $registered, $providerStatus)
    {
        $responseXml = $this->probing($msgHeader, $sequence, $interval, $failureCount, $registered, $providerStatus);
        $response = $this->listener->processProbing($this, $responseXml);

        if (!$this->isValid()) return;
        return $response;
    }
Respond to wsapi keepalive probing response.