선로 인터페이스 장치
    12.
    发明授权
    선로 인터페이스 장치 失效
    用于接收传输线和ISDN数据终端设备之间的设备

    公开(公告)号:KR1019910006454B1

    公开(公告)日:1991-08-26

    申请号:KR1019880017376

    申请日:1988-12-24

    Inventor: 염흥열

    Abstract: A line interface unit (LIU) is designed to code 400 kbps signal form CCU by B8ZS line code rule and to transmit coded signla in 3 unit via subscriber line. It also provides functions of equalization, timing regeneration and data regeneration. Finally the code signal is converted to 400 kpbs NRZ dat awhich is conveyed to common channel unit (CCU). The unit is composed of encoder/decoder (4) converting 400 kbps NRZ signal to B8Zs signal, vice versa, line driver and finishing unit (5), line equalizer (7), system timing selector (8) and generator (20), and data regenerator (6). The LIU feedbacks receiving signal loss, frame synchronization loss, and self-loop back command to CPU for alarming capability.

    Abstract translation: 线路接口单元(LIU)被设计用于通过B8ZS线路码规则对CCU的400kbps信号进行编码,并通过用户线传输3单位的编码信号。 它还提供均衡,定时再生和数据再生功能。 最后,代码信号转换为传送到公共通道单元(CCU)的400 kpbs NRZ数据。 该单元由编码器/解码器(4)将400kbps NRZ信号转换为B8Z信号,反之亦然,线路驱动器和整理单元(5),线路均衡器(7),系统定时选择器(8)和发电机(20) 和数据再生器(6)。 LIU反馈接收信号丢失,帧同步丢失和自回路指令给CPU报警能力。

    중규모 ISDN 가입자 다중장치의 가입자측 U 인터페이스 채널장치
    17.
    发明授权
    중규모 ISDN 가입자 다중장치의 가입자측 U 인터페이스 채널장치 失效
    ISDN交换机和订户之间接口的设备

    公开(公告)号:KR1019910005502B1

    公开(公告)日:1991-07-31

    申请号:KR1019880017364

    申请日:1988-12-23

    Inventor: 염흥열

    Abstract: A PMUX system is a multiplexer for a group including 10-12 ISDN subscribers in remote area, and comprises a PMUX/RT for the subscriber and a PUMX/COTd for the exchange system. The circuit is a part of the PMUX/RT, and converts the 2B+D+C channel information having 160 kpbs speed to the data stream having 2.048 Mpbs speed. Each channel information is separated and processed to transmit to the corresponding apparatus like a trunk interface or cpu. It also inserts the channel information to the stream having 2.048 Mbps speed, converts to the U interface frame having 160 kbps speed, and transmits it to the line after coding process.

    Abstract translation: 一个PMUX系统是一个组合的多路复用器,包括在远程区域中的10-12个ISDN用户,并且包括用于用户的PMUX / RT和用于交换系统的PUMX / COTd。 电路是PMUX / RT的一部分,将具有160kpbs速度的2B + D + C信道信息转换为具有2.048Mpbs速度的数据流。 每个信道信息被分离和处理以发送到相应的设备,如中继接口或cpu。 它还将信道信息插入到具有2.048Mbps速度的流中,转换为具有160kbps速度的U接口帧,并且在编码处理之后将其发送到线路。

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