HP rp7440 HP DTC Cabling and Racking Guide - Page 94
DTC Pin # on, connector, Port number, RS-423/RS232, signal, Jumpers, ATT356A, Pin # on, RS-423/RS-
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Page 94 highlights
9 Adapting to ATT356A cabling system DTC Pin # on 50-pin connector 13 39 14 40 15 41 16 42 17 43 18 44 19 45 20 46 21 47 22 48 23 49 24 50 25 Port number RS-423/RS232 signal P4 - CTS P4 - RXa/RD P4 - RXb/P4 - TXa/TD P4 - TXb/SGND P5 - RTS P5 - CTS P5 - RXa/RD P5 - RXb/P5 - TXa/TD P5 - TXb/SGND P6 - RTS P6 - CTS P6 - RXa/RD P6 - RXb/P6 - TXa/TD P6 - TXb/SGND P7 - RTS P7 - CTS P7 - RXa/RD P7 - RXb/P7 - TXa/TD P7 - TXb/SGND Not Used Not Used Jumpers ATT356A Pin # on 50-pin connector 13 39 14 40 15 41 16 42 17 43 18 44 19 45 20 46 21 47 22 48 23 49 24 50 25 Port number RS-423/RS-232 signal P4 - CTS P4 - RXa/RD P4 - RXb/P4 - TXa/TD P4 - TXb/SGND P5 - RTS P5 - CTS P5 - RXa/RD P5 - RXb/P5 - TXa/TD P5 - TXb/SGND P6 - RTS P6 - CTS P6 - RXa/RD P6 - RXb/P6 - TXa/TD P6 - TXb/SGND P7 - RTS P7 - CTS P7 - RXa/RD P7 - RXb/P7 - TXa/TD P7 - TXb/SGND Not Used Not Used Pin # on RJ45 connector 4 1 2 3 6 88