Network Device, DL3800E User's Guide

Pinouts B-7
B
X.21 TO DB-25 CABLE PINOUTS
EXTERNAL CLOCK CONNECTOR PIN ASSIGNMENTS
A DE-9 connector is provided on the DL3800E unit rear panel for
connection to an External Clock. Pin Assignments for the External Clock
connector are as Listed in Table B-14:
Table B-9 DB-25 to DB-15 Pinouts
X.21 Signal Name DB-25
3 Control (A) 4
10 Control (B) 19
4Rx DAta (A) 3
11 Rx Data (B) 16
2Send Data (A) 2
9Send Data (B) 14
5 Indication (A) 8
12 Indication (B) 10
6Serial Clock Rx (A) 17
13 Serial Clock Rx (B) 9
*7 Serial Clock External (A) 24
*14 Serial Clock External (B) 11
8Signal Ground 7
* Needs to be wired in when using X.21 with SCTE.
Table B-10 External Clock Pinouts
PIN SIGNAL
1Signal A
2Signal B
5Shield
3,4,6,7,8,9 No Connection