GPRS ppp problem - PPP

This is a discussion on GPRS ppp problem - PPP ; I am trying to connect to GPRS network by using PPP and WAVECOM Modem. Script that I'm using is wrriten below. 1. exec /usr/sbin/pppd /dev/tts/2 115200 lock crtscts noipdefault defaultroute 0.0.0.0:0.0.0.0 connect /etc/ppp/my-chat-script exec /etc/ppp/chat -v \ '' AT+WOPEN=1 \ ...

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Thread: GPRS ppp problem

  1. GPRS ppp problem

    I am trying to connect to GPRS network by using PPP and WAVECOM Modem.

    Script that I'm using is wrriten below.

    1.

    exec /usr/sbin/pppd /dev/tts/2 115200 lock crtscts noipdefault
    defaultroute 0.0.0.0:0.0.0.0 connect /etc/ppp/my-chat-script


    exec /etc/ppp/chat -v \
    '' AT+WOPEN=1 \
    OK AT#PPPmode=1 \
    OK AT+CGREG=1 \
    OK AT+CGATT=1 \
    OK at#gprsmode=1 \
    OK at#apnserv="dtac.co.th" \
    OK at#apnun="" \
    OK at#apnpw="" \
    OK at#ConnectionStart


    2. below lines are screen shot of result message screen.

    Mar 11 19:00:35 192 local2.info chat[93]: expect (OK)
    Mar 11 19:00:35 192 local2.info chat[93]: ^M
    Mar 11 19:00:35 192 local2.info chat[93]: AT+WOPEN=1^M^M
    Mar 11 19:00:35 192 local2.info chat[93]: OK
    Mar 11 19:00:35 192 local2.info chat[93]: send (AT#PPPmode=1^M)
    Mar 11 19:00:35 192 local2.info chat[93]: expect (OK)
    Mar 11 19:00:35 192 local2.info chat[93]: ^M
    Mar 11 19:00:35 192 local2.info chat[93]: AT#PPPmode=1^M^M
    Mar 11 19:00:35 192 local2.info chat[93]: OK
    Mar 11 19:00:35 192 local2.info chat[93]: send (AT+CGREG=1^M)
    Mar 11 19:00:35 192 local2.info chat[93]: expect (OK)
    Mar 11 19:00:35 192 local2.info chat[93]: ^M
    Mar 11 19:00:35 192 local2.info chat[93]: AT+CGREG=1^M^M
    Mar 11 19:00:35 192 local2.info chat[93]: OK
    Mar 11 19:00:35 192 local2.info chat[93]: send (AT+CGATT=1^M)
    Mar 11 19:00:36 192 local2.info chat[93]: expect (OK)
    Mar 11 19:00:36 192 local2.info chat[93]: ^M
    Mar 11 19:00:36 192 local2.info chat[93]: AT+CGATT=1^M^M
    Mar 11 19:00:36 192 local2.info chat[93]: OK
    Mar 11 19:00:36 192 local2.info chat[93]: send (at#gprsmode=1^M)
    Mar 11 19:00:36 192 local2.info chat[93]: expect (OK)
    Mar 11 19:00:36 192 local2.info chat[93]: ^M
    Mar 11 19:00:36 192 local2.info chat[93]: at#gprsmode=1^M^M
    Mar 11 19:00:36 192 local2.info chat[93]: OK
    Mar 11 19:00:36 192 local2.info chat[93]: send
    (at#apnserv=dtac.co.th^M)
    Mar 11 19:00:36 192 local2.info chat[93]: expect (OK)
    Mar 11 19:00:36 192 local2.info chat[93]: ^M
    Mar 11 19:00:36 192 local2.info chat[93]: at#apnserv=dtac.co.th^M^M
    Mar 11 19:00:36 192 local2.info chat[93]: ERROR^M


    But OK at#apnserv="dtac.co.th" \ on this line . I think chat
    program is deleting " from " --- " .
    Therefore, I am getting ERROR mesaage on this line. =>
    at#apnserv=dtac.co.th^M^M.
    I'll be thanksful for your comments or solution.

  2. Re: GPRS ppp problem

    "ibibiking" writes:
    [...]
    >
    > exec /etc/ppp/chat -v \
    > '' AT+WOPEN=1 \
    > OK AT#PPPmode=1 \
    > OK AT+CGREG=1 \
    > OK AT+CGATT=1 \
    > OK at#gprsmode=1 \
    > OK at#apnserv="dtac.co.th" \
    > OK at#apnun="" \
    > OK at#apnpw="" \
    > OK at#ConnectionStart
    [...]
    > But OK at#apnserv="dtac.co.th" \ on this line . I think chat
    > program is deleting " from " --- " .

    No, chat isn't doing that. The shell is. That's standard shell
    behavior. If you want it to pass through those quotes unmodified,
    then do this instead:

    OK at#apnserv=\"dtac.co.th\" \

    Or, equivalently, this:

    OK 'at#apnserv="dtac.co.th"' \

    --
    James Carlson, KISS Network
    Sun Microsystems / 1 Network Drive 71.232W Vox +1 781 442 2084
    MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677
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