Installation guide

A-62 Cisco 4000 Series Installation Guide
Serial Cables
– Not used
Not used
Twisted pair #9 – Not used
Not used
–
SHIELD_GROUND Braid SHIELD GND J7-1
J8-200
J8-199
O_TXD/RXD+
O_TXD/RXD-
Twisted pair #1 —>
—>
TRANSMIT+
TRANSMIT-
J7-2
J7-9
J8-185
J8-184
O_RTS/CTS+
O_RTS/CTS-
Twisted pair #4 —>
—>
CONTROL+
CONTROL-
J7-3
J7-10
J8-196
J8-195
I_RXD/TXD+
I_RXD/TXD-
Twisted pair #2 <—
<—
RECEIVE+
RECEIVE-
J7-4
J7-11
J8-178
J8-177
I_CTS/RTS+
I_CTS/RTS-
Twisted pair #5 <—
<—
INDICATION+
INDICATION-
J7-5
J7-12
J8-194
J8-193
I_RXC/TXCE+
I_RXC/TXCE-
Twisted pair #3 <—
<—
TIMING+
TIMING-
J7-6
J7-13
J8-190
J8-183
SIG_GROUND
SIG_GROUND
Twisted pair #6 – SIG GND
SIG GND
J7-8
J7-8
– 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
–
Table A-22 Low-Speed X.21 DTE Compact Serial Cable Pinouts (Continued)
Router End (200-Position Plug) Network End (15-Pin Connectors)
Pin Signal Note Direction Signal Pin