sim808 (simcomm) GSM location using AT+CLBS ( LBS server)

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Hello , I've been searching a lot about this ATC (AT+CLBS=1,1) but never seen any1 using it

at 1st I was getting ERROR for all CLBS commands but then i upgraded the firmware to the version that has BT and EAT ( _BT_EAT)

and I was getting responses from CLBS commands

everything works fine until last command which returns my location after doing triangulation from closest 3 cells (towers)

I got +CLBS: 3 ( 3 means NET ERROR from datasheet)

I talked to simcomm support and they replied me with this 

www.c4a.com.cn can not work well now, maybe it can not be used in your city because the server doesn’t support the cell database of your city.

 then they advised me to use other server 

 you can use AT+LBSCFG=1,3,”lbs-simcom.com:3002” to set new server and try AT+CLBS=1,1.

 I used it and I got a different ERROR code +CLBS: 4 (4 means DNS error)

 

the thing I have no idea about these servers , I don't know if they're global servers or they work only for China

I'm trying to use this in Egypt using Vodafone Egypt sim card and I don't know if there's other LBS servers that can work in Egypt and can work with sim808

the only ATC that works for me is AT+CIPGSMLOC which is based on google servers but it only returns closest cell location not my location .

so any information about this will be very appreciated ... I don't know even know if this is related to country laws or service providers (like vodafone) laws

thanks in advance 

 

https://www.avnet.com/wps/wcm/connect/onesite/5ddc2831-b698-44ac-92f5-50d79a14cb3f/Heracles-SIMCOM_GSM+Location_Application+Note_V1.02.pdf?MOD=AJPERES&CVID=m31n15G&CVID=m31n15G&CVID=m31jwAj&CVID=m31jwAj

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As this is specific to SIMCOM, and to your local area, this is really something you need to be discussing with your local SIMCOM representative.

 

Mostafa.aliaeldin wrote:
I'm trying to use this in Egypt using Vodafone Egypt sim card

Is that a SIM for a proper "M2M" or "IoT" service - or is it just a general consumer SIM intended for a phone?

 

If the former, you may be able to get some support from Vodafone ...

 

 

EDIT

 

You've referenced Avnet resources - are you actually working with Avnet?

 

EDIT 2

 

Have you looked at Open Cellid:

 

The world's largest Open Database of Cell Towers

 

Locate devices without GPS, explore Mobile Operator coverage and more!

 

https://www.opencellid.org/

 

 

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Last Edited: Thu. Apr 12, 2018 - 09:09 AM
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As this is specific to SIMCOM, and to your local area, this is really something you need to be discussing with your local SIMCOM representative.

I already emailed simcomm china support (egypt is support by china support) and i wrote their replies in the post

 

Is that a SIM for a proper "M2M" or "IoT" service - or is it just a general consumer SIM intended for a phone?

I'm not sure but I think it's normal SIM card with monthly package

 

You've referenced Avnet resources - are you actually working with Avnet?

No I don't work with avnet and idk them :) it's same datasheet from simcomm but i was lazy to upload it so i put this link instead contains the same datasheet for sim800 series gsm location

 

Have you looked at Open Cellid:

 

The world's largest Open Database of Cell Towers

 

Locate devices without GPS, explore Mobile Operator coverage and more!

 

https://www.opencellid.org/

No I didn't check this Open Cellid but I will check it now .

 

thanks a lot for your answer

 

EDIT : edited in respond to next comment .

Last Edited: Thu. Apr 12, 2018 - 08:28 PM
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please don't quote the entire post like that - it just clogs the thread and makes it hard to read.

 

just pick out the bits you're specifically referring to.

 

Or use the 'Reply' button if it's a general reply to an entire post - the forum automatically fills-in which post it relates to.

 

EDIT

 

OP has since edited the post.

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillatorhttps://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
Last Edited: Thu. Apr 12, 2018 - 02:00 PM