I/O and Cabling Considerations
Table 3-1. Telco 50-Pin Pinout, By Port Number
Telco Signal Telco Signal
Pin Name Pin Name
Port 1, 9, 17 28 DTRn 03 RNGn
27 XMTn 02 GNDn
26 RCVn 01 DCDn
Port 2, 10, 18 31 DTRn 06 RNGn
30 XMTn 05 GNDn
29 RCVn 04 DCDn
Port 3, 11, 19 34 DTRn 09 RNGn
33 XMTn 08 GNDn
32 RCVn 07 DCDn
Port 4, 12, 20 37 DTRn 12 RNGn
36 XMTn 11 GNDn
35 RCVn 10 DCDn
Port 5, 13, 21 40 DTRn 15 RNGn
39 XMTn 14 GNDn
38 RCVn 13 DCDn
Port 6, 14, 22 43 DTRn 18 RNGn
42 XMTn 17 GNDn
41 RCVn 16 DCDn
Port 7, 15, 23 46 DTRn 21 RNGn
45 XMTn 20 GNDn
44 RCVn 19 DCDn
Port 8, 16, 24 49 DTRn 24 RNGn
48 XMTn 23 GNDn
47 RCVn 22 DCDn
Note 1: Ports 1 through 8 are on connector A. Ports 9 through 16 are on connector B.
Ports 17 through 24 on connector C.
Note 2: Pins 25 and 50 are not used.
Note 3: The signal definitions are:
Signal Definition Type
DTRn Data Terminal Ready Output (From server to terminal)
XMTn Transmit Output (From server to terminal)
DCDn Data Carrier Detect Input (From terminal to server)
RCVn Receive Input (From terminal to server)
GNDn Logic Ground Common
RNGn Ring Input (From terminal to server)
where: n is the port number.
3-32 0021
To Next Page
Loading...
General