Re: Cannot get ADT to work

["Bill Garber" <willy46pa@comcast.net>]

< snip >

> Some more info about RS-232 and null modem cables follows:

< snip >

> Another simple Null Modem cable (on each side, connect RTS with
> CTS+DCD and also connect DSR with DTR).  Usually works but fails
> to detect when the other side has been disconnected:
>
>     GND -------- GND
>     Rx  <------- Tx
>     Tx  -------> Rx
>     RTS \      / CTS,DCD
> DCD,CTS /      \ RTS
>     DTR \      / DSR
>     DSR /      \ DTR

A much simpler way is to use a straight through cable,
then get a null modem adapter. Works for me.

Bill @ GarberStreet Enterprises
http://garberstreet.netfirms.com



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