3Com 5101M-MGT TV Receiver User Manual


 
RS-232 Cable Specs and Modem Use B - 1
B
RS-232 Cable Specs and
Modem Use
This appendix describes the cable pinouts for the RS-232 cable used to
connect the Ethernet Management Module (EMM) to a device. It also
explains the requirements for connecting a modem to the EMM.
RS-232 Cable Specifications
The RS-232 cable connects to the management interface on the EMM front
panel. The management interface is designed to connect to a cable
offering a male DTE interface. Table B-1 defines the RS-232 cabling
guidelines that apply for connecting devices to the management interface.
Table B-1. RS-232 Cable Guidelines
Device Cable
Terminal Female-to-female crossover (pin 2 to 3 and pin 3 to 2)
Female-to-male crossover (pin 2 to 3 and pin 3 to 2)
Modem Male-to-female straight-through (1 to 1, 2 to 2, etc.)
Terminal Server Refer to Supplier Documentation