COMMUNICATIONS CONVERTER FOR THE CONVERSION OF SYNCHR. OR ASYNCHRONOUS SERIAL DATAS TO A E1 (2 MBIT/S-G703.6) OR T1(1.544 MBIT/S) NETW. INTERF. EL.OUTP.INTERFACE VIA TER.BLOCK TWO INDEPENDENT SERIAL OPTICAL INPUTS WITH ST-CONNECTORS WITH 820NM F. MULTIMODE FIBER CABLE F. MAX.512 KBIT/S/115,2 KBIT/S FOR SYNC./ASYNC. DATAS. ONE RS232/RS485 INTERFACE WITH MAX.115,2 KBIT/S (RS485 MAX. 57,6KBIT/S) DESIGNED AS 9POL.SUB-D SOCKET FOR THE CONNECTION WITH DIGSI-KABEL 7XV5100. WIDERANGE POWER SUPPLY/AUXILLI. VOLTAGE FROM 24V-250V DC OR 115/230V AC