Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 353
  • Last Modified:

Modem initilization!


 where is the modem initilization file in RedHat and Slackware? I have a 56k Flex modem on ttyS1 and I need to give him a initilization string before it dials the Internet ...
 
0
elvaaa
Asked:
elvaaa
1 Solution
 
ahoffmannCommented:
Modem intialization is done by the dialing program.
Which one are you using?
0
 
jokanCommented:
In Redhat try

/etc/sysconfig/network-scripts/ifcfg-ppp0
0
 
pestilenceCommented:
If you use minicom (just type minicom as root), in the main screen type your initialitazion strings and then fire up a connection.

0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 
graham_leachCommented:
This depends upon how you are dialing the internet.

Using MINICOM:  Type AT XX XX XX

Where XX is valid at commands.  See www.modem.com for a complete list of AT command switches and syntax.

Using PPP:

This is a little more complicated.  Most people use a program called CHAT to actually get the interface (MODEM) working before pppd is invoked.  CHAT uses a dialog (prompt/response) model to control the flow of execution.  Here is a sample CHAT script that programs the modem and then dials an ISP.  Note that the CHAT script is invoked from the call to pppd on the command line or (more usually) from a file in /usr/sbin called ppp-on or ppp-up

NOTE:  The line which has AT is where you would place your own initialization strings.  Remember to place all extended characters (%,$) in a line that has quotes (') around it.

CHAT:

#!/bin/sh
#
# This is part 2 of the ppp-on script. It will perform the
# connection protocol for the desired connection.
#
exec chat -v                                                                    \
        TIMEOUT          3                                                    \
        ABORT              '\nBUSY\r'                                     \
        ABORT              '\nNO ANSWER\r'                         \
        ABORT              '\nRINGING\r\n\r\nRINGING\r'    \
        ''                         \rAT                                               \
        'OK-+++\c-OK'   ATH0                                             \
        TIMEOUT          30                                                  \
        OK                      ATDT$TELEPHONE                    \
        CONNECT         ''                                                    \
        ogin:--ogin:         $ACCOUNT                                   \
        assword:            $PASSWORD

0
 
elvaaaAuthor Commented:

pestilence,

I do not have minicom installed. I want my init string to go in modem before the ppp-on* script in Slackware dials internet ...
 
 
0
 
fmismettiCommented:
Usually, the ppp-on script calls a script named
/etc/ppp-on-dialer. Slackware does this way, at least (look in the contents of your ppp-on script to be sure)

In ppp-on-dialer you will see:
exec chat -v                                            \
        TIMEOUT         3                               \
        ABORT           '\nBUSY\r'                      \
        ABORT           '\nNO ANSWER\r'                 \
        ABORT           '\nRINGING\r\n\r\nRINGING\r'    \
        ''              \rAT                            \
        'OK-+++\c-OK'   ATH0                            \
        TIMEOUT         30                              \
        OK              ATDT$TELEPHONE                  \
        CONNECT         ''                              \
        ogin:--ogin:    $ACCOUNT                        \
        assword:        $PASSWORD

Change the line:

        ''              \rAT                            \

To

        ''              '\rAT XX XX XX XX XX'           \

Where XX are your modem commands. Then run ppp-on. You can execute "tail -f /var/adm/messages" to see the dialing process.

Hope it helps you.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Tackle projects and never again get stuck behind a technical roadblock.
Join Now