The internal state of a tube system is detected and monitored by coupling multiple inspection modules to the tube system. The method includes passing a memory allocation request from an application running on a network element configured to implement packet forwarding operations to an operating system of a network element, the memory allocation request including a table ID associated with an application table to be stored using the memory allocation. An air passage pathway is formed between the first and second collars. Each processing unit R1-Rn executes display processing for the display area for which use is allowed. The dilating lumen is sized and shaped to slidably receive the access sheath.