Installation guide

A-66 Cisco 4000 Series Installation Guide
Serial Cables
– Not used
Not used
Twisted pair #8 – Not used
Not used
–
– Not used
Not used
Twisted pair #9 – Not used
Not used
–
SHIELD_GROUND Braid SHIELD GND J4-1
J8-105
J8-106
I_RXD/TXD+
I_RXD/TXD-
Twisted pair #1 <—
<—
TRANSMIT+
TRANSMIT-
J4-2
J4-9
J8-123
J8-124
I_CTS/RTS+
I_CTS/RTS-
Twisted pair #4 <—
<—
CONTROL+
CONTROL-
J4-3
J4-10
J8-101
J8-102
O_TXD/RXD+
O_TXD/RXD-
Twisted pair #2 —>
—>
RECEIVE+
RECEIVE-
J4-4
J4-11
J8-116
J8-117
O_RTS/CTS+
O_RTS/CTS-
Twisted pair #5 —>
—>
INDICATION+
INDICATION-
J4-5
J4-12
J8-103
J8-104
O_TXCE/RXC+
O_TXCE/RXC-
Twisted pair #3 —>
—>
TIMING+
TIMING-
J4-6
J4-13
J8-111
J8-118
SIG_GROUND
SIG_GROUND
Twisted pair #6 – SIG GND
SIG GND
J4-8
J4-8
– Not used
Not used
Twisted pair #7 – Not used
Not used
–
– Not used
Not used
Twisted pair #8 – Not used
Not used
–
– Not used
Not used
Twisted pair #9 – Not used
Not used
–
SHIELD_GROUND Braid SHIELD GND J5-1
Table A-23 Low-Speed X.21 DCE Compact Octal Serial Cable Pinouts
(Continued)
Router End (200-Position Plug) Network End (15-Pin Connectors)
Pin Signal Note Direction Signal Pin