Installation guide

Cabling Specifications A-11
Serial Cables
Table A-7 Low-Speed EIA/TIA-232 DTE Compact Octal Serial Cable Pinouts
Router End (200-Position Plug) Network End (25-Pin Connectors)
Pin Signal Note Direction Signal Pin
J8-175
J8-176
MODE_0
GROUND
Shorting
Group
–
J8-26
J8-25
MODE_DCE
GROUND
Shorting
Group
–
SHIELD_GROUND Braid SHIELD GND J0-1
J8-1 O_TXD/RXD+
Not used
Twisted pair # 1 —> TXD
Not used
J0-2
J0-7
J8-5 I_RXD/TXD+
Not used
Twisted pair #3 <— RXD
Not used
J0-3
J0-7
J8-16
J8-14
O_RTS/CTS+
O_DTR/DSR+
Twisted pair #7 —>
—>
RTS
DTR
J0-4
J0-20
J8-23
J8-21
I_CTS/RTS+
I_DSR/DTR+
Twisted pair #8 <—
<—
CTS
DSR
J0-5
J0-6
J8-12
J8-11
IO_DCD/DCD+
SIG_GROUND
Twisted pair #6 <— DCD
SIG GND
J0-8
J0-7
J8-9 IO_TXC/TXC+
Not used
Twisted pair #5 <— TXC
Not used
J0-15
J0-7
J8-7 I_RXC/TXCE+
Not used
Twisted pair #4 <— RXC
Not used
J0-17
J0-7
J8-19
J8-18
O_LL/NIL+
SIG_GROUND
Twisted pair #9 —> LTST
SIG GND
J0-18
J0-7
J8-3 O_TXCE/RXC+
Not used
Twisted pair #2 —> TXCE
Not used
J0-24
J0-7
SHIELD_GROUND Braid SHIELD GND J1-1