Installation guide

A-32 Cisco 4000 Series Installation Guide
Serial Cables
V.35 Four-Port Serial Module Cable Assembly
Figure A-7 shows the V.35 cable assembly that is used on the NP-4T and the high-speed
serial ports on the NP-2T16S; Table A-13 lists the DTE pinouts; Table A-15 lists the DCE
pinouts. Arrows indicate signal direction: —> indicates DTE to DCE, and <— indicates
DCE to DTE.
1. See Figure A-6. Resistor = 1/4W, ±1%, 301 ohms.
J1-14
J1-48
J2-F
J2-A
Twisted pair RLSD
Ground
—>
—>
J1-39
J1-Shiel
d
J2-C
J2-Shiel
d
Twisted pair RTS
Not used
<—
J1-17 J1-5 Jumper DCE Mode To ground
J1-Shiel
d
J2-Shiel
d
Single Not used
J1-35
1
J1-19
J1-36
J1-38
Resistor
Resistor
TXD+
TXD–
R to ground
J1-37
J1-21
J1-44
J1-48
Resistor
Resistor
SCTE+
SCTE–
R to ground
J1-42
J1-44
J2-H
J2-B
Twisted pair DTR
Ground
<—
<—
J1-40
J1-Shiel
d
J2-D
J2-Shiel
d
Twisted pair CTS
Not used
—>
J1-Shiel
d
J1-Shiel
d
J2-Shiel
d
J2-Shiel
d
Twisted pair
Table A-13 Dual Serial Module V.35 DCE Cable Pinouts (Continued)
72-0740-02 DCE Connections
50 Pin 34 Pin Type Signal Name Direction