Re: Issue on connect 2 modems with a single phone line

[Ondrej Zary <linux@rainbow-software.org>]

Pavel Machek wrote:
 > Hi!
 >
 >
 >>  I want to try serial console in order to see the
 >>complete Linux kernel oops.
 >>  I have 2 computers, one is a PC, and the other is a
 >>Laptop. Unfortunately,my Laptop doesn't have a serial
 >>port on it. But then, the each machine has a internal
 >>serial modem respectively.
 >>  Then, can I use a telephone line to directly connect
 >>the two machines via their internal modems (i.e. One
 >>end of the telephone line is plugged into The PC's
 >>modem, and the other end is plugged into The Laptop's
 >>modem directly), and let them do the same function as
 >>two serial ports and a null modem can do? If it is,
 >>How to achieve that?
 >
 >
 > You'd need phone exchange to do this. Most modems will not talk using
 > simple cable. With 12V power supply and resistor phone exchange is
 > quite easy to emulate, but...
 > 								Pavel

I've tried it with 2 older Microcom modems and a piece of cable and it 
worked. Opened terminal on both sides, wrote ATDT123 (or any number you 
like) and ATA on the other. But if the laptop modem is a software modem, 
this will not work.

-- 
Ondrej Zary