Date: Wed, 26 Oct 2005 15:21:45 -0500 From: "Jordon Hofer" <jhofer@agsense.net> To: <freebsd-net@freebsd.org> Subject: Cellular Modem, PPP, and FreeBSD Message-ID: <EMELIFPHHFDADKJOCDIHKEBGCBAA.jhofer@agsense.net>
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Greetings. I am running a stripped down version of FreeBSD 4.11 on an embedded x86 board. I have an embedded cellular modem module (from MultiTech) that is attached to the serial port (going through the necessary RS232-TTL chip). I am using PPP to connect to the Internet through verizon. Everything works well until the connection gets interrupted. I am using ddial mode, so if the connection drops, it will redial. From the logs, I can see that PPP tries to redial, but after the initial connection, the modem does not respond to any at commands. If I power-cycle the modem, it will connect just fine the next time PPP tries to reconnect. I realize that there is a good chance that the problem is in the modem. I am just wondering if there are any cases where you need a special chat script to handle disconnects to return the modem to a clean state. Also, if there is a better group for this, please let me know. Thanks. Jordon Hofer Dir. Software Engineering AgSense LLC
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