Nortel Networks ROADSTER 56K User Manual

NetComm Roadster series 56K UsB modem 

 

 

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Appendix A: Cable Connections

This cable information is provided for your reference only.  Please ensure you only connect the appropriate cable into the correct socket on 
either this product or your computer.

If you are unsure about which cable to use or which socket to connect it to, please refer to the hardware installation section in this manual. 
if you are still not sure about cable connections, please contact a professional computer technician or NetComm for further advice.

RJ11 connector and cable

 An RJ-11 connector is the small, modular plug used for most analog telephones. It has six pin slots in the head, but usually only two or 
four of them are used.

RJ-11 Connector

Pin assignment 

Normal assignment 

1

signal Ground

Cts

3

RXd

tXd

5

+5 Volts In 

6

signal Ground

605 to RJ-11 adapter

The 605 to RJ-11 adaptor is provided to comply with the older 610 Telstra wall socket.  The 605 to RJ-11 adapter may be used to convert 
the supplied RJ-11 cable, if the older connection is required.

USB cable

A typical USB cord has an “A” connection (“upstream” to plug into the computer) and a “B” connection (“downstream” to plug into the 
device).

By using different connectors on the upstream and downstream ends, cable connection is simplified.  The “B” connection will fit a into the 
“B” socket of any USB device. Similarly, any “A” connector can be plugged into any

“A” socket, such as on a computer. 

If it is a new device, the operating system auto-detects it and asks for the driver disk. If the device has already been installed, the computer 
activates it and starts talking to it. USB devices can be connected and disconnected at any time.

“A” Connection

“B” Connection