Hi Vinicio
There are 2 ways kannel can receive MO messages:
- Modem pushes MO to kannel as soon as a message arrives. This is done with
CNMI command. Some modems/phones does not support this command. Mostly
Nokia.
- Kannel search periodically for messages in modem memory. This is done
with sim-buffering config directive.
There seems to be a problem with your modem firmware(?) where when
retrieving and sms and there is another sms incoming it drops the call or
does not notify kannel that the transaction has ended; thus kannel
thinks message retrieval has failed and does not delete the message from
memory and in the next memory check it will find the same message.
Does all your modems have the same issue? Are they the same brand/firmware
version?
There are a couple of things you can do:
- Configure CNMI command along with sim-buffering. I use this setup because
sometimes CNMI fails and messages stays on sim. Then, if the memory fills
up, the modem stop receiving any message. It has worked fine for me.
- Try to fine tune your modem setup. Check kannel directives for handshake
and a sleep-time between lines/commands for the modem.
- Try to use equipment buffering instead of sim buffering. You need to
configure this on kannel and your modem.... if the later allows it.
Hope helps
Alvaro
|-----------------------------------------------------------------------------------------------------------------|
Envíe y Reciba Datos y mensajes de Texto (SMS) hacia y desde cualquier
celular y Nextel
en el Perú, México y en mas de 180 paises. Use aplicaciones 2 vias via SMS
y GPRS online
Visitenos en www.perusms.com
On Thu, Sep 4, 2014 at 6:08 PM, Vinicio Cruz <vinicio.c...@gmail.com> wrote:
> Sorry, forgot to CC the group.
>
>
>
> *From:* Vinicio Cruz [mailto:vinicio.c...@gmail.com]
> *Sent:* Thursday, September 04, 2014 4:34 PM
> *To:* 'Alvaro Cornejo'
> *Subject:* RE: Receiveing same sms two or 3 times
>
>
>
> Did the test as you ask and everything ok no duplicated before or after.
> But now there is another twist while testing, I sent an sms while the modem
> was sending messages (20 aprox.) and then the message was received 4 times,
> seems to happened when there is traffic in the modem, messages are received
> 2, 3 and up to 11 times.
>
>
>
> I remember now that before we didn't use sim-buffering neither configured
> the SM storage (I think this is the default) and this didn't happen, after
> the new settings this problem stared.
>
>
>
> What do you think about it?.
>
>
>
> *From:* Alvaro Cornejo [mailto:cornejo.alv...@gmail.com]
> *Sent:* Thursday, September 04, 2014 3:52 PM
>
> *To:* Vinicio Cruz
> *Cc:* users
> *Subject:* Re: Receiveing same sms two or 3 times
>
>
>
> Hi
>
>
>
> Looks like kannel is able to see the pending message, retrieve it, but
> fails on decoding if and then fails the process and does not delete it from
> modem memory.
>
>
>
> Can you do the following:
>
>
>
> shut the related smsc-at connection on kannel
>
> connect to it with a terminal program like minicom
>
> enter commands
>
> at+cmgl to list messages in memory
>
> at+cmgr=n to retrieve message on memory location n as shown with previous
> command. Check that there is no problems with the message.
>
> at+cmgd=n to delete the mentioned message from memory
>
> atz to reset modem to factory defaults.
>
> power off then on the modem.
>
> send a sms to the modem, then use the same procedure above to check that
> the msg arrived correctly
>
> if so, disconnect minicom and restart smsc-at on kannel.
>
> see if kannel can retrieve the message.
>
>
>
> Hope this helps.
>
>
>
> It might be that the message in location 1 got corrupted somehow. Does
> this happens with all messages? and in different memory locations?
>
>
>
> Regards
>
>
>
> Alvaro
>
>
>
>
>
> |-----------------------------------------------------------------------------------------------------------------|
> Envíe y Reciba Datos y mensajes de Texto (SMS) hacia y desde cualquier
> celular y Nextel
> en el Perú, México y en mas de 180 paises. Use aplicaciones 2 vias via SMS
> y GPRS online
> Visitenos en www.perusms.com
>
>
>
> On Thu, Sep 4, 2014 at 3:36 PM, Vinicio Cruz <vinicio.c...@gmail.com>
> wrote:
>
> Thanks for your response Alvaro, this is a extract from the bearerbox:
>
>
>
> "fb43beb4-df37-4d58-958f-a8ecce10b176","2014-09-03 07:03:25","Receive
> SMS","modem-5-telca","","","+50250500880","51051500","0",Se supone que me
> lo debitan de mi cuenta
>
> "0658bf9c-53f7-40cb-a8f6-b33d958c2c88","2014-09-03 07:03:25","Receive
> SMS","modem-5-telca","","","+50250500880","51051500","0",Se supone que me
> lo debitan de mi cuenta
>
> "801daaf0-bd01-42a8-af38-6c299c302b15","2014-09-03 07:03:25","Receive
> SMS","modem-5-telca","","","+50250500880","51051500","0",Se supone que me
> lo debitan de mi cuenta
>
> "fc85117a-9cbb-42d0-a3a3-8666fc5808df","2014-09-03 07:03:25","Receive
> SMS","modem-5-telca","","","+50250500880","51051500","0",Se supone que me
> lo debitan de mi cuenta
>
> "011b26f4-efae-4b40-a4a4-7c12d8683a5a","2014-09-03 07:03:25","Receive
> SMS","modem-5-telca","","","+50250500880","51051500","0",Se supone que me
> lo debitan de mi cuenta
>
> "aaccd45f-3c67-41d8-a5dd-51973cc4f92a","2014-09-03 07:03:25","Receive
> SMS","modem-5-telca","","","+50250500880","51051500","0",Se supone que me
> lo debitan de mi cuenta
>
> "fd39d8c7-6020-4f95-9c25-eedb91c2249d","2014-09-03 07:03:25","Receive
> SMS","modem-5-telca","","","+50250500880","51051500","0",Se supone que me
> lo debitan de mi cuenta
>
> "8151edc9-94c2-4f86-893c-dac55db53c75","2014-09-03 07:03:25","Receive
> SMS","modem-5-telca","","","+50250500880","51051500","0",Se supone que me
> lo debitan de mi cuenta
>
> "e286537f-616e-4728-a756-7f16a323568f","2014-09-03 07:03:25","Receive
> SMS","modem-5-telca","","","+50250500880","51051500","0",Se supone que me
> lo debitan de mi cuenta
>
>
>
> This is a extract from the modem log, the error 321 goes from index 2 thru
> 35 wich is the slots available:
>
>
>
> 2014-09-04 09:09:18 [19991] [10] DEBUG: AT2[modem-5-telca]: -->
> AT+CMGS=120^M
>
> 2014-09-04 09:09:19 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- >
>
> 2014-09-04 09:09:19 [19991] [10] DEBUG: AT2[modem-5-telca]: send command
> status: 1
>
> 2014-09-04 09:09:19 [19991] [10] DEBUG: AT2[modem-5-telca]: -->
> 0011000881457529010000007BC72C75F8744EABCDA76E282F93D3F4374818768FDFA0A3890A020DDF6E7ADA5D76D3C36CD0F8ED06BDE1E334C20D0A83E46577F9FC1EA7C3721768F876CFEB6C7A780E62B3C3EDB01C1
>
> 4668362B7180E54C6D35D201B4D7693B140369A2C7663816CB4582DC702D96830DC0D
>
> 2014-09-04 09:09:19 [19991] [10] DEBUG: AT2[modem-5-telca]: --> ^Z
>
> 2014-09-04 09:09:20 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- >
>
> 2014-09-04 09:09:20 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- OK
>
> 2014-09-04 09:09:23 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- +CMGS: 79
>
> 2014-09-04 09:09:23 [19991] [10] DEBUG: AT2[modem-5-telca]: send command
> status: 0
>
> 2014-09-04 09:09:23 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- OK
>
> 2014-09-04 09:09:23 [19991] [10] DEBUG: AT2[modem-5-telca]: --> AT+CPMS?^M
>
> 2014-09-04 09:09:23 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- +CPMS:
> "SM",1,35,"SM",1,35
>
> 2014-09-04 09:09:23 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- OK
>
> 2014-09-04 09:09:23 [19991] [10] DEBUG: AT2[modem-5-telca]: 1 messages
> waiting in memory
>
> 2014-09-04 09:09:23 [19991] [10] DEBUG: AT2[modem-5-telca]: --> AT+CMGR=1^M
>
> 2014-09-04 09:09:24 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- +CMGR:
> 1,,54
>
> 2014-09-04 09:09:24 [19991] [10] DEBUG: AT2[modem-5-telca]: <--
> 06910562909984040B910552500088F000004190409030524A28D332685E87BFDD6550BC5E06B5CB20F61B442E8BD3F4B01B442E83DA69D0B85E76D3C3
>
> 2014-09-04 09:09:24 [19991] [10] DEBUG: AT2[modem-5-telca]: received
> message from SMSC: +5026099948
>
> 2014-09-04 09:09:24 [19991] [10] DEBUG: AT2[modem-5-telca]: Numeric sender
> (international) <+50250500880>
>
> 2014-09-04 09:09:24 [19991] [10] DEBUG: AT2[modem-5-telca]: User data
> length read as (40)
>
> 2014-09-04 09:09:24 [19991] [10] DEBUG: AT2[modem-5-telca]: Udh decoding
> done len=40 udhi=0 udhlen=0 udh=''
>
> 2014-09-04 09:09:24 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- OK
>
> 2014-09-04 09:09:24 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- OK
>
> 2014-09-04 09:09:30 [19991] [10] DEBUG: AT2[modem-5-telca]: failed to get
> message 1.
>
> 2014-09-04 09:09:30 [19991] [10] DEBUG: AT2[modem-5-telca]: --> AT+CMGR=2^M
>
> 2014-09-04 09:09:31 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- +CMS
> ERROR: 321
>
> 2014-09-04 09:09:31 [19991] [10] ERROR: AT2[modem-5-telca]: +CMS ERROR:
> +CMS ERROR: 321
>
> 2014-09-04 09:09:31 [19991] [10] ERROR: AT2[modem-5-telca]: +CMS ERROR:
> The memory/message storage index assigned to the AT command is invalid (321)
>
> 2014-09-04 09:09:31 [19991] [10] DEBUG: AT2[modem-5-telca]: failed to get
> message 2.
>
> 2014-09-04 09:09:31 [19991] [10] DEBUG: AT2[modem-5-telca]: --> AT+CMGR=3^M
>
> 2014-09-04 09:09:31 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- +CMS
> ERROR: 321
>
> 2014-09-04 09:09:31 [19991] [10] ERROR: AT2[modem-5-telca]: +CMS ERROR:
> +CMS ERROR: 321
>
> 2014-09-04 09:09:31 [19991] [10] ERROR: AT2[modem-5-telca]: +CMS ERROR:
> The memory/message storage index assigned to the AT command is invalid (321)
>
> 2014-09-04 09:09:31 [19991] [10] DEBUG: AT2[modem-5-telca]: failed to get
> message 3.
>
> 2014-09-04 09:09:31 [19991] [10] DEBUG: AT2[modem-5-telca]: --> AT+CMGR=4^M
>
> 2014-09-04 09:09:32 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- +CMS
> ERROR: 321
>
> 2014-09-04 09:09:32 [19991] [10] ERROR: AT2[modem-5-telca]: +CMS ERROR:
> +CMS ERROR: 321
>
> 2014-09-04 09:09:32 [19991] [10] ERROR: AT2[modem-5-telca]: +CMS ERROR:
> The memory/message storage index assigned to the AT command is invalid (321)
>
> 2014-09-04 09:09:32 [19991] [10] DEBUG: AT2[modem-5-telca]: failed to get
> message 4.
>
> 2014-09-04 09:09:32 [19991] [10] DEBUG: AT2[modem-5-telca]: --> AT+CMGR=5^M
>
> 2014-09-04 09:09:32 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- +CMS
> ERROR: 321
>
> 2014-09-04 09:09:32 [19991] [10] ERROR: AT2[modem-5-telca]: +CMS ERROR:
> +CMS ERROR: 321
>
> 2014-09-04 09:09:32 [19991] [10] ERROR: AT2[modem-5-telca]: +CMS ERROR:
> The memory/message storage index assigned to the AT command is invalid (321)
>
> 2014-09-04 09:09:32 [19991] [10] DEBUG: AT2[modem-5-telca]: failed to get
> message 5.
>
> 2014-09-04 09:09:32 [19991] [10] DEBUG: AT2[modem-5-telca]: --> AT+CMGR=6^M
>
> 2014-09-04 09:09:33 [19991] [10] DEBUG: AT2[modem-5-telca]: <-- +CMS
> ERROR: 321
>
>
>
> Tell me if you need something else, thanks in advance for your help.
>
>
>
> *From:* Alvaro Cornejo [mailto:cornejo.alv...@gmail.com]
> *Sent:* Thursday, September 04, 2014 7:39 AM
> *To:* Vinicio Cruz
> *Cc:* users
> *Subject:* Re: Receiveing same sms two or 3 times
>
>
>
> Can you post some logs?
>
>
>
> Some times this happens when there is a coverage issue and the mobile is
> not able to send the ack to the smsc or when the sim in full and the smsc
> tries to resend the message.
>
>
>
> Regards
>
>
>
> Alvaro
>
>
>
> |-----------------------------------------------------------------------------------------------------------------|
> Envíe y Reciba Datos y mensajes de Texto (SMS) hacia y desde cualquier
> celular y Nextel
> en el Perú, México y en mas de 180 paises. Use aplicaciones 2 vias via SMS
> y GPRS online
> Visitenos en www.perusms.com
>
>
>
> On Wed, Sep 3, 2014 at 5:55 PM, Vinicio Cruz <vinicio.c...@gmail.com>
> wrote:
>
> Hi everyone, I wonder if someone have had this problem/behavior. Kannel
> receiving sms two or even tree to four times the same message using modems,
> my configuration use message-storage = "SM" and sim-buffering = true, I've
> read the manual about this two but haven't understand them very well.
>
>
>
> I'm using svn-r5104 on linux, modems Wavecom based.
>
>
>
> Hope some one can help me.
>
>
>
> *Vinicio.*
>
>
>
>
>
>
>
