A subscriber connection circuit of a speed converter for connection between a T 1 (T1) transmission line and an E1H transmission line

摘要

And more particularly to a circuit for transmitting and receiving information to and from a T1 transmission apparatus having a transmission rate of 1.57 Mbps in an E1H system operating at a transmission rate of 1.024 Mbps.;In E1H systems with a transmission rate of 1.024Mbps, a T1 transmission equipment with a transmission rate of 1.544Mbps is used for communication, while a frame interval for insertion / deletion of null data during data transmission between an E1H system and a T1 system It is possible to increase the efficiency of the information communication by connecting the subscriber during the period.