User guide

B-4 DL3800 DS1 Inverse Multiplexer User Guide—February 1999
B
T1 NETWORK PIN ASSIGNMENTS
The network connector is a DA-15 connector. The assignments for the
Network connector are given below.
DB-25 TO DE-9 ADAPTER PINOUTS
An adapter is available from Digital Link that will allow the Digital Link
DE-9 ribbon cable to be compatible with a DB-25 connector on the
terminal port.
BLK
BLU
19
NC
7
NC
DRAIN 1 NC
Table B-5 Network Pin Assignments
PIN SIGNAL
1 Send towards Network Tip (T1)
9 Send towards Network Ring (R1)
2 Frame Ground
3 Receive from Network Tip (T)
11 Receive from Network Ring (R)
4 Frame Ground
5,6,7,8,10,12,1314,15 Not Connected
Table B-6 DB-25 to DE-9 Pinouts
DB9 DB25
32
23
74
85
66
Table B-4 DB-25 to RS-449 DTE Connector Pin Assignments
TWISTED
PAIR RS449 DB25