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Whole document tree 11. Trying Out Your Modem (Dialing Out)11.1 Are You Ready to Dial Out ?Once you've plugged in your modem and know which serial port it's on you're ready to try using it. If you already have an account with an ISP to connect to the Internet, you could try using a program like "wvdial" to connect to the Internet using the PPP protocol. As an alternative to taking one big step using PPP to connect to the Internet, you could do a two step process: First just test out your modem without using PPP (using Minicom or Kermit). Then if your modem works OK, use "wvdial" or other ppp dialer to connect to the Internet. A different strategy is to first try a ppp dialer and then if that doesn't work out, fallback to Minicom or Kermit to see if your modem works OK. Knowing how to use either Minicom or Kermit is handy for dialing out to some places directly without going thru the Internet. If you are going to use Minicom or Kermit you must find a phone number to dial that will accept phone calls from a computer (without using PPP). Perhaps a local library has such a phone number for its on-line catalog. Then make sure you are ready to phone. Do you know what serial port (such as ttyS2) your modem is on? You should have found this out when you io-irq configured your serial ports. Have you decided what speed you are going to use for this port? See Speed Table for a quick selection or What Speed Should I Use with My Modem for more details. If you have no clue of what speed to set, try setting it a few times faster than the advertised speed of your modem. Also remember that if you see a menu where an option is "hardware flow control" and/or "RTS/CTS" or the like, select it. Is a live telephone cable plugged in to your modem? You may want to connect this cable to a real telephone to make sure that it can produce a dial tone. Now you need to select a communication (dialing) program to use to dial out. Simple dialing programs include: minicom, seyon (X Window), and kermit. Internet dialing programs (using PPP) include wvdial, kppp (for KDE), gnome-ppp (for gnome). See section Communications Programs about some communications programs. Three examples are presented next: Dialing Out with wvdial Dialing Out with Minicom and Dialing Out with Kermit
11.2 Dialing Out with wvdialWvdial is a program with not only dials out, but starts PPP and logs you in to an ISP where you get to the Internet. Wvdial may be configured during the installation process or by using the program "wvdialconf". See the man pages for both "wvdialconf" and "wvdial". However, before using wvdial you must do two other tasks not covered by the wvdial documentation:
11.3 Dialing Out with MinicomMinicom comes with most Linux distributions. To configure it you should be the root user. Type "minicom -s" to configure. This will take you directly to the configuration (set-up) menus. Alternatively you could just run "minicom" and then type ^A to see the bottom status line. This shows to type ^A Z for help (you've already typed the ^A so just type z). From the help menu go to the Configuration menu. Most of the options don't need to be set for just simply dialing out. To configure you have to supply a few basic items: the name of the serial port your modem is on such as /dev/ttyS2 and the speed such as 115200. These are set at the serial port menu. Go to it and set them. Also (if possible) set hardware flow control (RTS/CTS). Then save them. When typing in the speed, you should also see something like "8N1" which you should leave alone. It means: 8-bit bytes, No parity, 1 stop-bit appended to each byte. If you can't find the speed you want, a lower speed will always work for a test. Exit (hit return) when done and save the configuration as default (dfl) using the menu. You may want to exit minicom and start it again so it can now find the serial port and initialize the modem, or you could go to help and tell minicom to initialize the modem. Now you are ready to dial. But first at the main screen you get after you first type "minicom" make sure there's a modem there by typing AT and then hit the <enter> key. It should display OK. If it doesn't something is wrong and there is no point of trying to dial. If you got the "OK" go back to help and select the dialing directory. You may edit it and type in a phone number, etc. into the directory and then select "dial" to dial it. Alternatively, you may just dial manually (by selecting "manual" and then type the number at the keyboard). If it doesn't work, carefully note any error messages and try to figure out what went wrong.
11.4 Dialing Out with Kermit You can find the latest version of
If your modem responds to
where 7654321 is a phone number. Use ATDP instead of ATDT if you have
a pulse line. If the call goes through, your modem is working.
To get back to the
This was just a test using the primitive "by-hand" dialing method.
The normal method is to let
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