code: public function getProperties($consumptionId, $telephoneAccount)
      {
          if (!$consumptionId)
              throw new BadMethodCallException('Parameter $consumptionId is missing.');
          if (!$telephoneAccount)
              throw new BadMethodCallException('Parameter $telephoneAccount is missing.');
          try {
              $r = $this->get('telephony/' . $telephoneAccount->getBillingAccount()->getBillingAccount() . '/service/' . $telephoneAccount->getService() . '/voiceConsumption/' . $consumptionId)->send();
          } catch (\Exception $e) {
              throw new VoiceConsumptionException($e->getMessage(), $e->getCode(), $e);
          }
          return $r->getBody(true);
      }
docs: Get Telephony account service properties
  
  @param string $service
  @param Telephony $telephoneAccount
  @return string Json
  @throws Exception\VoiceConsumptionException
  @throws BadMethodCallException