The number of openable file handles is limited by an OS. Simultaneously communicating partners are limited to, e.g., 64 systems. To solve this problem, a controller (202) of a communication control unit (201) assigns a virtual handle (Vj) in response to a request from a program (Pi) and manages a correspondence...http://www.google.com.au/patents/US5995964?utm_source=gb-gplus-sharePatent US5995964 - Managing first and second handles used in communication with an apparatus connected to a network
