Xyplex Terminal Server 720 Manual page 30

I/O and Cabling Considerations
Telco
Pin
Port 1, 9, 17 28
27
26
Port 2, 10, 18 31
30
29
Port 3, 11, 19 34
33
32
Port 4, 12, 20 37
36
35
Port 5, 13, 21 40
39
38
Port 6, 14, 22 43
42
41
Port 7, 15, 23 46
45
44
Port 8, 16, 24 49
48
47
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
D T Rn
XMTn
DCDn
RCVn
GNDn
RNGn
where: n is the port number.
3-32
Table 3-1. Telco 50-Pin Pinout, By Port Number
Signal
Name
D T Rn
XMTn
RCVn
D T Rn
XMTn
RCVn
D T Rn
XMTn
RCVn
D T Rn
XMTn
RCVn
D T Rn
XMTn
RCVn
D T Rn
XMTn
RCVn
D T Rn
XMTn
RCVn
D T Rn
XMTn
RCVn
Definition
Data Terminal Ready
Transmit
Data Carrier Detect
Receive
Logic Ground
R i n g
Telco Signal
Pin Name
03 RNGn
02 GNDn
01 DCDn
06 RNGn
05 GNDn
04 DCDn
09 RNGn
08 GNDn
07 DCDn
12 RNGn
11 GNDn
10 DCDn
15 RNGn
14 GNDn
13 DCDn
18 RNGn
17 GNDn
16 DCDn
21 RNGn
20 GNDn
19 DCDn
24 RNGn
23 GNDn
22 DCDn
Type
Output (From server to terminal)
Output (From server to terminal)
Input (From terminal to server)
Input (From terminal to server)
Common
Input (From terminal to server)
0021