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Cable and Adapter Specifications
Serial Port
For detailed information about the combination ports, see the chapter
Table B-5
Serial Port Specification
1
RS-232
Pin
Signal Description (Abbreviation)
1
DCE ready, ring indicator
(DSR/RI)
2
Received line signal detector
(DCD)
3
DTE ready (DTR)
4
Signal ground (COM)
5
Received data (RxD)
6
Transmitted data (TxD)
7
Clear to send (CTS)
8
Request to send (RTS)
1. The RS232 pinouts use the EIA-561 standard.
Power Connectors
For detailed information about the router power supply terminal connectors (AC and DC input
terminals), see the chapter
Cable and Adapter Specifications
SFP Cable
For detailed information about the SFP ports, see the chapter
Table B-6
SFP Module
1000BASE-SX
Cisco 1120 Connected Grid Router Hardware Installation Guide
B-4
DTE
DCE
<—
—>
<—
—>
<—
—>
–
–
<—
—>
<—
—>
<—
—>
<—
—>
Router Hardware
SFP Port Cabling Specification
Wavelength
Cable
(nm)
Type
850
MMF
Appendix B
RS-485 Full
RS-485 Half
Duplex
Duplex
Signal
Dir
Signal
–
–
–
–
–
–
–
–
–
COM
–
COM
—>
TX+
TX/RX+
<—
RX+
–
—>
RX-
TX/RX-
<—
TX-
–
Description.
Router Hardware
Core size/
Modal
Cladding Size
Bandwidth
(micron)
(MHz/km)
62.5/125
160
62.5/125
200
50/125
400
50/125
500
Connector and Cable Specifications
Router Hardware
Description.
Ethernet
Dir
10/100
10000
–
RX+
TX/RX1+
–
RX-
TX/RX1-
–
TX+
TX/RX2+
–
–
TX/RX3+
<—>
–
TX/RX3-
–
TX-
TX/RX2-
<—>
–
TX/RX4+
–
–
TX/RX4-
Description.
Cable Distance
722 feet (220 m)
902 feet (275 m)
1640 feet (500 m)
1804 feet (550 m)
3281 ft (1000 m)
OL-26438-02
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