Re: Messages no longer received after idle (gsm modem)

Sun, 19 Jul 2009 15:36:02 -0700

No, I am very serious. Without logs I don't even bother looking at it. And I've been writing software for ~30 yrs.
----- Original Message ----- From: "Nicolas Pottier" <[email protected]> 
To: "Nikos Balkanas" <[email protected]>
Cc: <[email protected]>
Sent: Sunday, July 19, 2009 11:54 PM
Subject: Re: Messages no longer received after idle (gsm modem)
Are you kidding me? Look I've written software for 15 years, if you don't understand the concept of something failing silently then you shouldn't be trying to help.
The behavior is that Kannel is not picking up incoming SMS messages, this lack of activity is the problem, the error you seek. Obviously Kannel can't throw an error for something it doesn't know it is missing.
If you are actually trying to help and not just pose as helping, perhaps you could advice on what AT commands are at play to have GSM modems push incoming messages to Kannel and suggested ways of debugging said behavior via minicom. If you don't know, then perhaps you should just resist the temptation to reply. 

-Nic

Nikos Balkanas wrote:

Hi,
I don't know what you are talking about, but without logs showing an error, we cannot help you. 

BR,
Nikos
----- Original Message ----- From: "Nicolas Pottier" <[email protected]> 
To: "Nikos Balkanas" <[email protected]>
Cc: <[email protected]>
Sent: Sunday, July 19, 2009 11:05 PM
Subject: Re: Messages no longer received after idle (gsm modem)
Well the problem is that lots of SMS messages were being sent to that number but not detected.. I'm wondering if there is maybe a different AT command I should be issuing, as obviously the messages are no longer being passed through after the very start. 

Nikos Balkanas wrote:

Hi,
 That's grand, but I don't see any problem in your logs!
 BR,
Nikos

    ----- Original Message -----
    *From:* Nic Pottier <mailto:[email protected]>
    *To:* [email protected] <mailto:[email protected]>
    *Sent:* Sunday, July 19, 2009 9:32 PM
    *Subject:* Messages no longer received after idle (gsm modem)

    Howdy All,
I am having a problem where SMS's stop being received after a minute or two of inactivity. Receiving the messages works fine immediately 
    after startup but then nothing.

    This is using a Sierra Wireless 875 PCMCIA aircard, using the
    following config.  Log is attached below showing reception of one
    message, but then nothing even though the keep-alive messages are
    ACK'ing ok.

    group = smsc
    smsc = at
    modemtype = auto
    device=/dev/ttyUSB0
    my-number = 12063595733
    connect-allow-ip = 127.0.0.1
    keepalive=60
    log-level = 0

    I'm using a 60 second keepalive but that doesn't seem to be
    helping.  Any other ideas?
2009-07-19 11:18:52 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: Found <14> 
    modems in config
    2009-07-19 11:18:52 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: -->
    AT+CSMS=?^M
2009-07-19 11:18:52 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- +CSMS: 
    (0-1)
    2009-07-19 11:18:52 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
2009-07-19 11:18:52 [10835] [6] INFO: AT2[/dev/ttyUSB0]: Closing device 2009-07-19 11:18:52 [10835] [6] INFO: AT2[/dev/ttyUSB0]: opening device 
    2009-07-19 11:18:52 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: device
    opened. Telnet mode = 0
2009-07-19 11:18:52 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: device opened 
    2009-07-19 11:18:52 [10835] [6] INFO: AT2[/dev/ttyUSB0]: Logging in
2009-07-19 11:18:53 [10835] [6] INFO: AT2[/dev/ttyUSB0]: init device 
    2009-07-19 11:18:53 [10835] [6] INFO: AT2[/dev/ttyUSB0]: speed set
    to 115200
    2009-07-19 11:18:53 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: --> ATZ^M
    2009-07-19 11:18:53 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
    2009-07-19 11:18:53 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: --> AT^M
    2009-07-19 11:18:53 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- AT
    2009-07-19 11:18:53 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
2009-07-19 11:18:53 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: --> AT&F^M 
    2009-07-19 11:18:53 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- AT&F
    2009-07-19 11:18:53 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
2009-07-19 11:18:53 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: --> ATE0^M 
    2009-07-19 11:18:53 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- ATE0
    2009-07-19 11:18:53 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
    2009-07-19 11:18:53 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: -->
    AT+IFC=2,2^M
    2009-07-19 11:18:53 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
2009-07-19 11:18:53 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: --> AT+CPIN?^M 2009-07-19 11:18:54 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- +CPIN: 
    READY
    2009-07-19 11:18:54 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
    2009-07-19 11:18:54 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: -->
    AT+CMGF=0^M
    2009-07-19 11:18:54 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
    2009-07-19 11:18:54 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: -->
    AT+CSMS=?^M
2009-07-19 11:18:54 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- +CSMS: 
    (0-1)
    2009-07-19 11:18:54 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
    2009-07-19 11:18:54 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: -->
    AT+CNMI=1,2,0,1,0^M
    2009-07-19 11:18:54 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
    2009-07-19 11:18:54 [10835] [6] INFO: AT2[/dev/ttyUSB0]: AT SMSC
    successfully opened.
    2009-07-19 11:18:56 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: --> AT^M
    2009-07-19 11:18:56 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
2009-07-19 11:19:23 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- +CMT: ,26 
    2009-07-19 11:19:23 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <--

07914140540500F8040B912160779992F400009070911191918A07CBB2DB5D26E701
    2009-07-19 11:19:23 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: received
    message from SMSC: +14044550008
    2009-07-19 11:19:23 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: Numeric
    sender (international) <+12067799294>
    2009-07-19 11:19:23 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: User data
    length read as (7)
    2009-07-19 11:19:23 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: Udh
    decoding done len=7 udhi=0 udhlen=0 udh=''
    2009-07-19 11:19:23 [10835] [18] DEBUG: send_msg: sending msg to
    box: <127.0.0.1>
2009-07-19 11:19:23 [10835] [18] DEBUG: boxc_sender: sent message to 
    <127.0.0.1>
    2009-07-19 11:19:23 [10835] [17] DEBUG: boxc_receiver: got ack
    2009-07-19 11:19:48 [10835] [17] DEBUG: boxc_receiver: heartbeat
    with load value 0 received
    2009-07-19 11:19:58 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: --> AT^M
    2009-07-19 11:19:58 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
    2009-07-19 11:21:00 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: --> AT^M
    2009-07-19 11:21:00 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
    2009-07-19 11:22:02 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: --> AT^M
    2009-07-19 11:22:02 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
    2009-07-19 11:23:04 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: --> AT^M
    2009-07-19 11:23:04 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
    2009-07-19 11:24:06 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: --> AT^M
    2009-07-19 11:24:06 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK
    2009-07-19 11:25:08 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: --> AT^M
    2009-07-19 11:25:08 [10835] [6] DEBUG: AT2[/dev/ttyUSB0]: <-- OK

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