Question

Hi, I have a problem with the FMB120 Firmware FMB.Ver.03.18.16.Rev.00.e, it is disconnecting from our Gurtam provider with the following SMS message "Data link: 0 GPRS: 1 Phone: 0 SIM: 0 OP: 732101 Signal: 4 NewSMS: 0 Roaming: 1 SMSFull: 0 LAC: 307 Cell ID: 62787 NetType: 1 FwUpd: -65536 "

a little worried because it is becoming constant. Any solution ?

The configuration "open Link Timeout = 290"; Response TimeOut = 30 "I think the configuration is fine.

I remain attentive to your answers.

Thank you.

Answer 1

Hello Flavio,

Thank you for the question.

Maybe your link closes because there is no new data to send, can you please attach a picture of you data acquisition settings?
 

Best regards,

Vytenis

Comments

Hi Crowd, we attached our CFG that we used for the FMB120 configuration. Before we had configured in Send Period 3600 now we changed it to 120 could it have been that the fault?

It is very important to solve since we have more than 1000 FMB120 and are disconnecting.

If you can send me a good CFG configuration or a recommendation, I would be grateful.

https://drive.google.com/open?id=1V7fuQeY1cl_-mcrQCBBvzKibOsFwsEgK

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Hello again

Is the device disconnecting while moving? Because according to this config it shouldn't happen according to the configuration.

On stop disconnect is possible because the device is probably going to sleep.

I would recommend that you contact your teltonika sales manager about this issue, then support specialist can look trough you configuration double check data on our server or provide support via remote session so your issue would be solved faster.

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What is your GPRS -> record settings -> open link timeout parameter configured as?

And how do you know device is disconnecting when its moving? Are you sure about that?
Maybe device switches to "on stop mode" where -> it is configured to save only every 3600sec/1 hour - 1 periodic record.
Maybe this is the reason - why device disconnects from server - due to that record settings -> open link timeout.
This parameter works like this:
1. if device does not receive any packet from server or send any packet to server for certain amount of time (default is 300 @ 3.26.1.0 configuration version).
Then device disconnects from server.

What you could do if you are using latest FW like 03.18.16 -> is to configure GPRS -> record settings -> network ping timeout parameter to like under 300 seconds.
What this parameter/functionality (network ping timeout) does -> it sends 0xFF 1 byte of packet every X amount of time as configured.
It is designed to keep connection alive.
Your server just should ignore this 0xFF 1 byte packet. If it receives such.

Regards

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I have detected by performing tests that the gprs context is disabled (parameter 2000 fmb120) is it possible that the server produces this effect in the configuration of the equipment? attached log

https://drive.google.com/open?id=1C9cnz9s37vgUl4XZyUd6NOndmsT7wL5n

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Grant access or make that file with public access please.

Regards

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Are you sure this apn is correct? "postm2m.lu"

Are you sure this SIM card is with allowed GPRS access?

From log i see that device tries to open GPRS -> but fails.

Also check APN login/pass.

Have you tried to insert this SIM card into say mobile phone - and check if mobile can connect to gprs?

Regards

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If it is correct, that is the APN and does not need username and password. In the registry you can see another APN that Emify (EM) that makes the change of SIM to see if it was her problem but did not connect.

If SIMs work well, we have with FMB120 (1200 GPS), FM3612 (50 GPS) most are from the provider post.jasper.com (postm2m.lu).

Could it be that they connect to Roaming and do not give access?

I have a Mobile that is working well with the SIM and has the GPRS on.
 

If you need any LOG any test I am attentive to your comments.

We have access to Fota Web in case there is a CFG change that presents problems and is in motion.

Greetings.

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"In the registry you can see another APN that Emify (EM) that makes the change of SIM to see if it was her problem but did not connect."

Not sure about what are you talking. From provided log - device all the time was connected to same operator. When modem initialization was done.

From log we can also see that device keeps restarting modem (due to not being able to connect to GPRS operator):

[2019.01.15 21:36:11]-[NETWORK]    WARNING @ 2695:[CLEAR.ERROR.CNT.2686] Error count: 10 cleared
[2019.01.15 21:36:11]-[MODEM.ACTION]    Modem restart handler begin

*********************************************************

apn used in the log was always the same:     Line 1118: [2019.01.15 21:37:44]-[NETWORK]    attempting to create pdp params. apn: postm2m.lu, len: 10

*********************************************************

"Could it be that they connect to Roaming and do not give access?

Yes device is in roaming.

network status:

[MODEM.STATUS]

    CCID        : 89883030000007232942
    IMSI        : 295050900162246
    Data Link   : 0/0/0/0/0/0
    GPRS Status : 0
    Phone Status: 0
    PIN Attemts : 3,3
    GSM Operator: 73003
    Bat. Charge : 5
    GSM Signal  : 5
    Service     : 1
    New Message : 0
    Roaming     : 1
    SMS Full    : 0
    Voice Call  : 0
    LAC         : 1316
    Cell ID     : 35285
    CFUN        : 1
    CSQ (rssi)  : 31
    [0]SIM detected: 1
    Network Type: 1/2G

So these sims do not have gprs access @ 73003 operator @ roaming then?

Regards

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Additional info:

Device also sees 73001/73002 op_codes as available. But it does not connect to these (automatically).

You could configure 5000 param_id @ gsm operators for this 73001/73002 op_codes. If you know that this SIM can connect to that gsm op and have gprs access there.

Because on 73003 op_code -> it appears device does not have access to GPRS @ roaming.

Regards

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So these sims do not have gprs access @ 73003 operator @ roaming then?

YES

- these sms if they have gprs, have unlimited data and are with balance.

it is possible that when roaming, that the local operator closes the gprs context, changing the registry in the activated gprs device to gprs disabled?

What would be the configuration to minimize the operator closing the GPRS context. apart from the "network ping timeout"

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Network ping timeout is to keep data link open, not GPRS.

There is no way to control GSM operator regarding GPRS access.

I.e. if device strays too far away from currently connected operator say -> modem automatically connects to next "best" GSM op base station.

And same applies for operator, i.e too low signal -> can disconnect from one operator and loose GPRS access, and then device will be attempting to connect to next available GSM op -> and try to acquire GPRS access for data sending.

What you can do if you know your area where FMB devices are traveling, and if you know gsm operator codes under which your SIM cards -> have GPRS access:

1. is to configure @ gsm operator_list -> those op_codes, so device would be actively trying to connect to your configured operators.

2. And then device would use automatic connection -> if none of configured operator_codes would be seen/available near it.

Regards

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Thank you very much for the help, let's do the tests with the operators and the network ping configuration.

If I have any problem, I'll get in touch.

Greetings.