Installation manual

A-4 Cables
V.11 Signals (Modulus 9/21 Enclosures)
Pin DCE
Position
V.11 Function/Signal
Name
Pin DTE
Position
Function/Signal
Name
1 --------------- SHIELD/FRAME
GROUND
1 --------------- SHIELD/FRAME
GROUND
2 <------------- T (A) TRANSMITTED
DATA A
2 -------------> TRANSMITTED
DATA A
3 -------------> R (A) RECEIVED DATA A 3 <------------- RECEIVED DATA A
4 <------------ C (A) CONTROL A 4 -------------> CONTROL A
6 -------------> I (B) INDICATION B 6 <------------- INDICATION B
7 -------------- SIGNAL GROUND 7 --------------- SIGNAL GROUND
8 -------------> I (A) INDICATION A 8 <------------ INDICATION A
13 -------------> S (B) TRANSMIT CLOCK
B
13 <------------ TRANSMIT CLOCK
B
14 <------------ T (B) TRANSMITTED
DATA B
14 -------------> TRANSMITTED
DATA B
15 -------------> S (A) TRANSMIT CLOCK
A
15 <------------ TRANSMIT CLOCK
A
16 -------------> R (B) RECEIVED DATA B 16 <------------ RECEIVED DATA B
17 -------------> * RECEIVE CLOCK A 17 <------------- RECEIVE CLOCK A
19 -------------> * RECEIVE CLOCK B 19 <------------- RECEIVE CLOCK B
20 <------------- C (B) CONTROL B 20 -------------> CONTROL B
23 <------------- X (B) EXTERNAL
TRANSMIT CLOCK
B
23 -------------> EXTERNAL
TRANSMIT CLOCK
B
24 <------------- X
(A)
EXTERNAL
TRANSMIT CLOCK
A
24 -------------> EXTERNAL
TRANSMIT CLOCK
A
* These V.11 signals are not used in the X.21 standard.