3Com S24x, S26x, S27x Pin DCE , Signal Name Pin DTE , Signal Name

A-2 Cables
The following table shows V.35/V.36 signals with V.35/V.36 DIMs on the
motherboard.
V.35/V.36 (Motherboard)
Pin DCE
Position Function/ Signal Name Pin DTE Position Function/ Signal Name
1 --------------- SHIELD/FRAME
GROUND 1 --------------- SHIELD/FRAME 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 <-------------- TRANSMIT
DATA B 14 --------------> TRANSMIT DATA B
15 --------------> TRANSMIT
CLOCK A 15 <-------------- TRANSMIT 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 --------------> TRANSMIT
CLOCK B 21 <-------------- TRANSMIT CLOCK B
22 <-------------- EXTERNAL
TRANSMIT
CLOCK B
22 -------------> EXTERNAL
TRANSMIT
CLOCK B
24 <-------------- EXTERNAL
TRANSMIT
CLOCK A
24 --------------> EXTERNAL
TRANSMIT
CLOCK A