34 pin M/34 MALE connector |
| Pin |
Name |
Dir |
Description |
| A |
|
 |
Chassis Ground |
| B |
|
|
Signal Ground |
| C |
RTS |
 |
Request To Send |
| D |
CTS |
 |
Clear To Send |
| E |
DSR |
|
Data Set Ready |
| F |
DCD |
|
Data Carrier Detect |
| H |
DTR |
|
Data Terminal Ready |
| J |
LL |
|
Local Loopback |
| K |
|
|
Local Test |
| L |
|
|
unused |
| M |
|
|
unused |
| N |
|
|
unused |
| P |
TxD- |
|
Send Data A |
| R |
RxD- |
|
Receive Data A |
| S |
TxD+ |
|
Send Data B |
| T |
RxD+ |
|
Receive Data B |
| U |
|
|
Terminal Timing A |
| V |
|
|
Receive Timing A |
| W |
|
|
Terminal Timing B |
| X |
|
|
Receive Timing B |
| Y |
|
|
Send Timing A |
| Z |
|
|
unused |
| AA |
|
|
Send Timing B |
| BB |
|
|
unused |
| CC |
|
|
unused |
| DD |
|
|
unused |
| EE |
|
|
unused |
| FF |
|
|
unused |
| HH |
|
|
unused |
| JJ |
|
|
unused |
| KK |
|
|
unused |
| LL |
|
|
unused |
| MM |
|
|
unused |
| NN |
|
|
unused |
There seem to be two versions of the V.35 pinning. One is called V.35 Winchester, the other is called V.35 Straight. One is mirrored to the other. We don"t know how it is mirrored. This information came from a 3Com source. Their Access Builder 4000 V.35 Card interface is V.35 Straight they say. The Dutch PTT supplies V.35 interface according to V.35 Winchester. Connecting these two requires some sort of crossed cable. | 
34 pin M/34 FEMALE connector |
