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Installation and Replacement 3-19
Cabling the Vanguard 342
DB25 V.35/V.36 Pinouts
Connector Pinout This table shows the DB25 V.35/V.36 connector pinouts for DCE/DTE mode. To use
DTE to DTE or DCE to DCE mode, a crossover adapter cable is required. Refer to
Figure 3-5 on page 3-21 for crossover cable connections:
Note
To use DTE mode, the Interface Options parameter must be set to XOVER. For
details on setting the V.35/V.36 Interface Options, see “Setting the Interface
Options” section on page 3-10.
Port 3
Pin
DCE Signal Function/Signal
Name
Port 3
Pin
DTE Signal
using
Crossover
Adapter Cable
Function/Signal Name
1 ------------- PROTECTIVE
GROUND
1 ------------- PROTECTIVE GROUND
2 <------------ TRANSMITTED
DATA-A
2 ------------> TRANSMITTED DATA-A
3 ------------> RECEIVED DATA-A 3 <------------ RECEIVED DATA-A
4 <------------ REQUEST TO SEND 4 ------------> REQUEST TO SEND
5 ------------> CLEAR TO SEND 5 <------------ CLEAR TO SEND
6 ------------> DATA SET READY 6 <------------ DATA SET READY
7 ------------- SIGNAL GROUND 7 -------------- SIGNAL GROUND
8 ------------> DATA CARRIER
DETECT
8 <------------ DATA CARRIER DETECT
14 <------------ TRANSMITTED
DATA-B
14 ------------> TRANSMITTED DATA-B
15 ------------> TRANSMITTED
CLOCK-A
15 (no signal) TRANSMITTED
CLOCK-A
16 ------------> RECEIVED DATA-B 16 <------------ RECEIVED DATA-B
17 ------------> RECEIVE CLOCK-A 17 <------------ RECEIVE CLOCK-A
18 ------------> RECEIVE CLOCK-B 18 <------------ RECEIVE CLOCK-B
20 <------------ DATA TERMINAL
READY
20 ------------> DATA TERMINAL
READY
21 ------------> TRANSMITTED
CLOCK-B
21 (no signal) TRANSMITTED
CLOCK-B
22 <------------ EXTERNAL
TRANSMIT
CLOCK-B
22 ------------> EXTERNAL TRANSMIT
CLOCK-B
24 <------------ EXTERNAL
TRANSMIT
CLOCK-A
24 ------------> EXTERNAL TRANSMIT
CLOCK-A
25 ------------- (no connection) 25 ------------- (no connection)