HP 800 HP DTC Cabling and Racking Guide - Page 96

Adapting to a 10BaseT cabling system

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9 Adapting to a 10BaseT cabling system Adapting to a 10BaseT cabling system The 10BaseT cabling system uses 4 wires per port and provides 12 ports on a 25 pair cable (or on a 50-pin telco-like connector). The DTC provides 8 direct connect RS-232 or RS-423 ports on a 50-pin connector. The following table provides a cabling conversion using cross-connect blocks (punch down blocks) from ATT356A to 10BaseT. DTC Pin # on 50-pin connector 26 1 27 2 28 3 29 4 30 5 31 6 32 7 33 8 34 9 35 10 36 11 37 12 Port number RS-423/RS232 signal P0 - RTS P0 - CTS P0 - RXa/RD P0 - RXb/P0 - TXa/TD P0 - TXb/SGND P1 - RTS P1 - CTS P1 - RXa/RD P1 - RXb/P1 - TXa/TD P1 - TXb/SGND P2 - RTS P2 - CTS P2 - RXa/RD P2 - RXb/P2 - TXa/TD P2 - TXb/SGND P3 - RTS P3 - CTS P3 - RXa/RD P3 - RXb/P3 - TXa/TD P3 - TXb/SGND Jumpers 10BaseT Pin # on 50-pin connector 26 1 27 2 28 3 29 4 30 5 31 6 32 7 33 8 Port number RS-423/RS-232 signal Pin # on RJ45 connector P0 - RXa/RD 1 P0 - RXb/- 2 P0 - TXa/TD 3 P0 - TXb/SGND 6 P1 - RXa/RD 1 P1 - RXb/- 2 P1 - TXa/TD 3 P1 - TXb/SGND 6 P2 - RXa/RD 1 P2 - RXb/- 2 P2 - TXa/TD 3 P2 - TXb/SGND 6 P3 - RXa/RD 1 P3 - RXb/- 2 P3 - TXa/TD 3 P3 - TXb/SGND 6 90

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Adapting to a 10BaseT cabling system
9
Adapting to a 10BaseT cabling system
The 10BaseT cabling system uses 4 wires per port and provides 12 ports on a 25 pair
cable (or on a 50-pin telco-like connector).
The DTC provides 8 direct connect RS-232 or RS-423 ports on a 50-pin connector.
The following table provides a cabling conversion using cross-connect blocks
(punch down blocks) from ATT356A to 10BaseT.
DTC Pin # on
50-pin
connector
Port number -
RS-423/RS232
signal
Jumpers
10BaseT
Pin # on
50-pin
connector
Port number -
RS-423/RS-232
signal
Pin # on RJ45
connector
26
P0 - RTS
1
P0 - CTS
27
P0 - RXa/RD
<--------->
26
P0 - RXa/RD
1
2
P0 - RXb/-
<--------->
1
P0 - RXb/-
2
28
P0 - TXa/TD
<--------->
27
P0 - TXa/TD
3
3
P0 - TXb/SGND
<--------->
2
P0 - TXb/SGND
6
29
P1 - RTS
4
P1 - CTS
30
P1 - RXa/RD
<--------->
28
P1 - RXa/RD
1
5
P1 - RXb/-
<--------->
3
P1 - RXb/-
2
31
P1 - TXa/TD
<--------->
29
P1 - TXa/TD
3
6
P1 - TXb/SGND
<--------->
4
P1 - TXb/SGND
6
32
P2 - RTS
7
P2 - CTS
33
P2 - RXa/RD
<--------->
30
P2 - RXa/RD
1
8
P2 - RXb/-
<--------->
5
P2 - RXb/-
2
34
P2 - TXa/TD
<--------->
31
P2 - TXa/TD
3
9
P2 - TXb/SGND
<--------->
6
P2 - TXb/SGND
6
35
P3 - RTS
10
P3 - CTS
36
P3 - RXa/RD
<--------->
32
P3 - RXa/RD
1
11
P3 - RXb/-
<--------->
7
P3 - RXb/-
2
37
P3 - TXa/TD
<--------->
33
P3 - TXa/TD
3
12
P3 - TXb/SGND
<--------->
8
P3 - TXb/SGND
6