公开(公告)号：JPH03136444A

公开(公告)日：1991-06-11

申请号：JP33619489

申请日：1989-12-25

Applicant: KOREA ELECTRONICS TELECOMM ,  KOREA TELECOMMUNICATION

Inventor： KIMU JIE MIYUN ,  KIMU JIE GUN ,  YUN HIYON YURU ,  KIMU CHIYUN HII

IPC: H04J3/00 ,  H04M7/00 ,  H04M7/12 ,  H04Q1/39 ,  H04Q1/50 ,  H04Q3/00 ,  H04Q3/42 ,  H04Q11/04

Abstract: PURPOSE: To obtain an effective and reliable different kind of signal converter in connection between an E1 system (European transmission system) and a T1 system (north American transmission system) by constituting this device of an input signal bit state analyzing means and a signal bit storing and converting means. CONSTITUTION: A different kind of signal converter is constituted of an input signal bit state analyzing part 10 which inputs signal information from plural T1 trunks and plural E1 trunks, compares this input signal information with present signal bit information, and executes a function for transition to a new state, and a signal bit state storing and converting part 20 connected with the input signal bit state analyzing part 10 which stores the signal state of each channel, operates signal conversion so that it can be suited to each system, and generates and transmits new signal bits. Then, the signal information in the T1 system is converted into the signal information in the E1 system, and the signal information in the E1 system is converted into the signal information in the T1 system. Thus, the signal converting function can be prevented from being affected by failure due to an error generated on the transmission path, and reliability can be increased.