Modem: Connection failed??

Hello :slight_smile: I got at last one REAL modem to use with QNX RTP. I connected it
to COM1 and tried to connect from the “dialer” utility (in the Photon
desktop).

Well!! It appears to be perfect. I selected /dev/ser1 as serial
device and wrote the information to connect to my ISP. Then I pushed
“Connect” … and the connection status window showed in from of me. Oopps…
bad luck: in a few seconds it showed a message saying “Connection failed”.
ehm?

I tried again activating an option that let you see the commands that
are sent to the modem and it appeared this:

ATZ

OK

ATM1

'few seconds… and then

Connection failed

Uhmm, there is more about this problem… I have heard about a program
called “qtalk” to test the modem on any serial port and send commands to it
manually. I started this program and simulated the action of the Dialer from
Photon. This is the log of commands that I’ve seen using qtalk (on
/dev/ser1 , of course )

ATZ

OK

ATM1

OK

ATDT (+ a telephone number) /this string is used to dial

and… IT DIALS!! I know this because I hear the sounds that the modem
“plays”.

What do you think? Dialer only sends the “ATZ” followed by “OK” and “ATM1”
has not any answer. But when I write the commands it qtalk THEY WORK.

Whats the problem??
Thank you very much!!!

Simply JMN