| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize the primary group speed interface accommodation circuit, in which structural data are transferred with respect to the primary group speed interface accommodation system. SOLUTION: The primary group speed interface circuit 300 is used to contain a transmission line 100, having a primary group speed interface defined by the JT-I431 of the TTC standards to an ATM communication network 200. In this case, only valid time slots for transmission of valid data are extracted from time slots continuously reached from the primary group speed interface transmission line, structural data are formed by the valid data sent through the valid time slots, the speed is converted and the result is given to an ATM cell assembly processing, structural data outputted from ATM cell disassembly processing are inverse speed converted and distributed to valid time slots of the primary group speed interface transmission line, through the provision of a speed conversion means 301.</p> |
