A hybrid exchange which exchanges the STM data to be transmitted periodically to realize an exchange in unit of the ATM data to be transmitted asynchronously includes asynchronous transmission terminal interface as the interface with an STM terminal, an synchronous transmission terminal interface as...http://www.google.com/patents/US6560219?utm_source=gb-gplus-sharePatent US6560219 - Hybrid exchange, an exchange, and a re-arrangement method for STM data in an exchange
