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Re: smstools and CDMA

  • From: Andrey Gordon
  • Date: Sat Jun 21 00:11:38 2008 
>From what I found is that smstools will only work with GSM AT command set,
so if you are 'locked' into CDMA you are screwed in regards of using
smstools.
I'm attaching the html page that I wrote up after I got the modem working in
case the server dies. I have to mention that i was only interested in
sending sms, so that's the only part I was messing with.

Andrey Gordon [[email protected]]

On Fri, Jun 20, 2008 at 4:50 PM, Douglas K. Rand <[email protected]>
wrote:

> Andrey> I have a RHEL server that I connected MultiTech CDMA modem
> Andrey> (MTCBA-C-U-N3) and running smstools3 with it.
>
> Great!
>
> Andrey> Let me know if you want some documents that I wrote up when I
> Andrey> was messing with it.
>
> Yes, that'd be great.
>

                          Netmon2 CDMA modem notes
   _______________________________________________________________________

   Operating System:

   RHEL4


   Application:

   InterMapper/SMS

   Version:


   Security:


   Author:

   Andrey Gordon

   Last Updated:

   04/08/08


Overview

   Here I will describe what I did to make the CDMA modem work on netmon2.

[email protected]:/~$ cat  /etc/redhat-release
Red  Hat Enterprise Linux ES release 4 (Nahant  Update 6)
[email protected]:/~$  uname  -r
2.6.9-67.0.7.ELsmp

More Information

   Installing the driver:

   When I first plugged in the modem it only  showed up in
   /proc/bus/usb/devices with the following record:
   < T:   Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  5 Spd=12  MxCh=  0
   < D:  Ver= 1.10 Cls=ff(vend.) Sub=00 Prot=00 MxPS= 8 #Cfgs=   1
   < P:  Vendor=06e0 ProdID=f110 Rev= 1.01
   < S:   Manufacturer=Texas Instruments
   < S:  Product=TUSB3410 Serial  Port
   < C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA
   < I:  If#= 0  Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)
   < E:   Ad=01(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
   The device had  now power (as it does even in windows before you
   install the driver)
   So  I went on your support page:
   [1]http://multitech.com/SUPPORT/Families/MultiModemCDMA/drivers.asp
   There  about in the middle of the page you will see "Linux drivers for
   wireless USB  modems"
   File named wireless_linux.zip
   That link is broken, so is  the ReadMe file. But clicking on readme
   takes me to
   [2]ftp://ftp.multitech.com/wireless/wireless_linux.txt/  (this maybe
   behavior of Firefox3 on Mac)
   I went up a directory into [3]ftp://ftp.multitech.com/wireless
   There  was a file that should have been referenced from the support
   page
   [4]ftp://ftp.multitech.com/wireless/wireless_linux.zip
   Unzipping  that file revealed
   drwxr-xr-x  3 agordon epicadm   4096  Apr  4 11:49 .
   drwxr-xr-x  4 agordon epicadm   4096 Apr   4 11:05 ..
   -rw-r--r--  1 agordon epicadm    950  Apr  4 11:06 readme.txt
   -rw-r--r--  1 agordon epicadm 159077 Apr   4 11:06 ti_usb-1.1-1.src.rpm
   -rw-r--r--  1 agordon epicadm  156137 Apr  4 11:06 ti_usb-1.1.tgz.gz
   -rw-r--r--  1 agordon  epicadm 143048 Apr  4 11:06
   ti_usb_2.6-1.1-1.src.rpm
   -rw-r--r--   1 agordon epicadm 140357 Apr  4 11:06  ti_usb_2.6-1.1.tgz
   -rw-r--r--  1 agordon epicadm  16358 Apr   4 11:06
   ti_usb_2.6_release_notes-1.1.txt
   -rw-r--r--  1 agordon  epicadm  16385 Apr  4 11:06
   ti_usb_multitech-1.1.tgz
   -rw-r--r--   1 agordon epicadm  10325 Apr  4 11:06
   ti_usb_multitech_release_notes-1.1.txt
   -rw-r--r--  1 agordon epicadm   22299 Apr  4 11:06
   ti_usb_release_notes-1.1.txt
   Of  particular interest I found ti_usb_2.6-1.1-1.src.rpm
   RedHat Enterprise  server 4 has no kernel sources, just headers, so I
   followed the following link  to get sources for RHEL4 kernel
   [5]http://kbase.redhat.com/faq/FAQ_85_5109.shtm
   After  installing sources, I followed the ReadMe in the
   wireless_linux.zip file,  basically giving these commands:
    sudo rpmbuild --rebuild  ti_usb_2.6-1.1-1.src.rpm
    sudo rpm -Uvh  ti_usb_2.6-1.1-1.i386.rpm
   After this /dev/ttyUSB0 was created and the  modem received power. I
   have not tested the send/receive yet, but I think on  the right track
   here.
   I also appears that after any RedHat updates you need to reinstall the
   RPM package.

   Installing the SMS software:

   I downloaded SMS server tools v.3. [6]http://smstools3.kekekasvi.com/

   Unfortunately, they are written for GSM modems. They detect our CDMA
   modem just fine, but the message sending format is slightly different.
   GSM modems have a concept of PDU, which is basically all the info like
   destination, message text, etc encoded together. CDMA modems have to
   send it in clear text.

   After unzipping smstools3-3.0.10.tar.gz in ./src folder I edited two
   files:

   In smsd.c I replaced this text

   make_pdu(to,text,textlen,alphabet,flash,report,with_udh,udh_data,device
   s[deevice].mode,pdu,validity, replace_msg);

   if (strcasecmp(devices[device].mode,"old")==0)

       sprintf(command,"AT+CMGS=%i\r",(int)strlen(pdu)/2);

     else

     sprintf(command,"AT+CMGS=%i\r",(int)strlen(pdu)/2-1);

     sprintf(command2,"%s\x1A",pdu);


   With this text

   sprintf(command,"AT+CMGS=\"%s\"\r",to);

   sprintf(command2,"%s\x1A",text);


   This takes care of the message command format


   Now we need to trick the software at the point where it tries to select
   the PDU mode for the modem, because this command simply does not exist
   on CDMA modems and returns and error.


   In modeminit.c I replaced this line:

   strcpy(command,"AT+CMGF=0\r");

   with this one

   strcpy(command,"AT\r");


   Now we compile and install the software. So the intermapper can make
   use of this we need a few changes. The outgoing folder for SMS need be
   writable by intermapper, so I made it writable by everyone. It's
   located in /var/spool/sms/outgoing


   To make use of CLI notifier in intermapper I made a symbolic link in
   /opt/Intermapper/InterMapper_Settings/Tools to /usr/local/bin/sendsms
   which is a script installed by the smstools


   Also, smstools need configuration file to run:


   [email protected]:/~$ cat /etc/smsd.conf

   # Example smsd.conf. Read the manual for a description

   devices = CDMA1

   logfile = /var/log/smsd.log

   loglevel = 5

   [CDMA1]

   device = /dev/ttyUSB0

   incoming = no

   baudrate = 115200


   The last item is to create an rc.d link for the service to start on
   boot.

   $cd /etc/rc3.d

   $sudo ln -s ../init.d/sms3


   And start the service. Intermapper CLI notifier should look like so:

   sendsms 608xxxxxxx `${MESSAGE}'

References

   1. https://vpn1.epicsystems.com/+CSCO+ch756767633A2F2F7A68796776677270752E70627A++/SUPPORT/Families/MultiModemCDMA/drivers.asp
   2. file://localhost/+CSCOE+/files/files_retr/init/html/file/ftp://7367632E7A68796776677270752E70627A/wireless/wireless_linux.txt/
   3. file://localhost/+CSCOE+/files/files_retr/init/html/file/ftp://7367632E7A68796776677270752E70627A/wireless
   4. file://localhost/+CSCOE+/files/files_retr/init/html/file/ftp://7367632E7A68796776677270752E70627A/wireless/wireless_linux.zip
   5. https://vpn1.epicsystems.com/+CSCO+ch756767633A2F2F786F6E66722E657271756E672E70627A++/faq/FAQ_85_5109.shtm
   6. https://vpn1.epicsystems.com/+CSCO+ch756767633A2F2F667A666762627966332E78727872786E6669762E70627A++/