KR940001642A - Matching device for North American primary speed digital subscriber - Google Patents

Abstract

The present invention relates to a matching device for matching ISDN PABX and North American primary speed digital subscriber. The matching device according to the present invention receives a synchronization frequency (FS) and a system frequency from a system switch of an exchange system. And a synchronization frequency generator for generating frequency signals of 2.048Mhz and 1.544MHz, and converting the structure of 32 B channels supplied from the switching system and 24 B channels to the PCM transmission path, It converts control data and status information for processing by MPU unit, and switches for 64KHz signal channel switching required by HDLC processing unit, and matches with primary group speed subscriber for North American coding processing and 24 frame alignment and CRC processing. PCM matching unit for executing, MPU unit for initializing each process, performing HDLC processing and L2 functions to communicate with L3, which is an upper processing unit, memory unit for storing processing programs and various data of MPU unit, and necessary communication with upper processing unit A common memory section for storing various data and a monitor matching section for connecting a monitor for checking the status of the apparatus. It will be able to match ISDN PABX and North American first-rate speed subscribers.

Description

Matching device for North American primary speed digital subscriber

Since this is an open matter, no full text was included.

2 is a block diagram of a matching device according to the present field name,

3 is a timing diagram between each frequency of the apparatus shown in FIG.

Claims (2)

Synchronous frequency (FS) and system frequency are supplied from system switch of exchange system. And a synchronization frequency generator (1) for generating frequency signals of 2.048 MHz and 1.544 MHz, and converting the structure of 32 B channels supplied from the switching system and 24 B channels in the PCM transmission path, and the PCM matching unit (3). The switch unit 2 converts the control data and state information of the form required by the MPU unit 4 to process and switches the 64 KHz signal channel required by the HOLC processing unit, and matches with the primary group speed subscriber. A PCM matching unit (3) which performs encoding processing and 24 external frame alignments and CRC processing, an MPU unit (4) which initializes each processing unit and performs external communication with L3, which is an upper processing unit, in charge of HDL root processing and L2 functions, and A memory unit 5 for storing processing programs and various data of the MPU 4, a common memory unit 6 for storing various data necessary for communication with the upper processing unit, and a monitor for checking the status of the apparatus. Access The matching device of the North American digital subscriber group velocity primary method comprising the monitor matching unit 7 for group. The matching device according to claim 1, wherein the MPU unit 4 includes an HDLC processor for rearranging and transmitting the signal data processed in the layer 2 into data having a predetermined format. . ※ Note: The disclosure is based on the initial application.