| 摘要 |
PURPOSE:To realize a digital private exchanging system having high flexiblity and instant responsive properties for the contents of communication, by providing a number of transmission channels to a piece of transmission link. CONSTITUTION:The code system which flows a transmission link is formed by the repetition of a transmission frame of a certain duration of time. The nodes connected to the transmission network loops alpha and beta share a transmission frame having the same duration of time flowing to each loop. This frame circulates each loop. An outgoing/incoming processor D transfers the exchange information directly to a switchboard A to perform the exchange of the information contents of the transmission frame. The information part of the transmission frame comprises three parts. The data information slot of the 1st part and the call information slot of the 2nd part are replaced by the switchboard A. The time shared slot alloted to the nodes excepting that of the device D of the 3rd part is processed by the device D. |
