Nortel Networks Passport 4400 User Manual
Page 123
Cable Diagram Pin Assignments
Passport 4400 Hardware Installation Manual
A-7
Figure A-4. Cable Model No. NTAU20AA - 4400 to DCE Equipment
To 4400
Data Terminal
Equipment (DTE)
To Data
Communication
Equipment (DCE)
NC
NC
NC
NC
NC
NC
Receive Data A
20
R
Receive Data A (RD A)
Receive Data B
45
T
Receive Data B (RD B)
Transmit Data Clock A
21
Y
Serial Clock Transmit External A (SCT A)
Transmit Data Clock B
46
AA
Serial Clock Transmit External B (SCT B
Receive Data Clock A
22
V
Serial Clock Receive A (SCR A)
Receive Data Clock B
47
X
Serial Clock Receive B (SCR B)
Transmit Data
3
P
Send Data A (SD A)
Transmit Data B
28
S
Send Data B (SD B)
External Data Transmit Clock A
5
U
Serial Clock Transmit A (SCT A)
External Data Transmit Clock B
30
W
Serial Clock Transmit B (SCT B)
Data Terminal Ready (DTR)
37
H
Data Terminal Ready (DTR)
Unassigned
13
BB
Unassigned (UN A)
Request to Send (RTS)
12
C
Request to Send (RTS)
Ground
43
B
Signal Ground (S GND)
Clear to Send A (CTS A)
9
D
Clear to Send (CTS)
Data Set Ready A (DSR A)
10
E
Data Set Ready (DSR)
Carrier Detect A (DC A)
11
F
Carrier Detect (CD)
Cable Present Status
14
Ground
39
External Select B
2
Ground
27
V.35 G1
23
Ground
48
V.35 G2
24
Ground
49
V.35G3
25
Ground
50
34-Pin
V.35 Male
MD50
Male