Zabbix sends 3 sms instead of 1 and also event error: Expected [+CMGS: ] received []

[verus]

Hi,

I have zabbix 2.0.3 and I want to use SMS notifications.
For that I use a Novatel USB modem which works fine (/dev/ttyUSB3)
I can also sent an sms from command line without a problem.

So, everything is setup and configured in Zabbix and when the item is triggered, I get my e-mail as configured and also my sms notification(s).

The problem is that I get 3 sms notifications and in the events details I can see the following error:
Expected [+CMGS: ] received []

So I think that zabbix is sending the sms but not receiving feedback and that it tries that 3 times and then the error is created ?
However, I receive the sms notification 3 times, which I don't want of course.

This is not a problem of escalation, all that is configured correctly (STEP FROM 1 TO 1 and only sent to 1 user with 1 phone number).

How can I correct this ?
thanks.

[Prometej]

FILE sms.c

#define>ZBX_AT_ESC<---->"\x1B"
#define ZBX_AT_CTRL_Z<->"\x1A"

<------>zbx_sms_scenario scenario[] =
<------>{
<------><------>{ZBX_AT_ESC<--->, NULL<><------>, 0},<->/* Send <ESC> */
<------><------>{"AT+CMEE=2\r"<>, ""/*"OK"*/<-->, 10},<>/* verbose error values */
<------><------>{"ATE0\r"<----->, "OK"<><------>, 10},<>/* Turn off echo */
<------><------>{"AT\r"><------>, "OK"<><------>, 10},<>/* Init modem */
<------><------>{"AT+CMGF=1\r"<>, "OK"<><------>, 10},<>/* Switch to text mode */
<------><------>{"AT+CMGS=\""<->, NULL<><------>, 0},<->/* Set phone number */
<------><------>{number><------>, NULL<><------>, 0},<->/* Write phone number */
<------><------>{"\"\r"><------>, "> "<><------>, 10},<>/* Set phone number */
<------><------>{message<------>, NULL<><------>, 0},<->/* Write message */
<------><------>{ZBX_AT_CTRL_Z<>, ""<--><------>, 20},<>/* Send message */
<------><------>{NULL<-><------>, "+CMGS: "<--->, 30},
<------><------>{NULL<-><------>, ""<--><------>, 10},
<------><------>{NULL<-><------>, ""<--><------>, 5},<->/* ^Z */
<------><------>{NULL<-><------>, NULL<><------>, 0}
<------>};

<------>zbx_sms_scenario<------>*step = NULL;
<------>struct termios<><------>options, old_options;
<------>int<---><------><------>f, ret = SUCCEED;

Edit as I have in the code file sms.c.
Recompile zabbih server and the problem is still with the three-error sending SMS (although sent 3 SMS) should disappear. Good luck to you.

manual AT command from GSM Modems