Messages

1

Yate bugs / Re: GPRS issues with Telit modem (error 3101?)

« on: February 07, 2019, 04:44:24 AM »

Hello

Do you see the modem registered using (CREG) ? Does it show home network or roaming network?

Thanks,
Nour

2

YateBTS / Re: GPRS issue with Telit modem

« on: February 07, 2019, 04:43:37 AM »

Hello

Do you see the modem registered using (CREG) ? Does it show home network or roaming network?

Thanks,
Nour

3

Yate bugs / Re: No GPRS connection with some devices

« on: January 24, 2019, 07:41:04 AM »

Hi John,

You are welcome 

Can you please try:
AT+WGPRS=<mode>[, [<parameter>] [,<parameter2>]
Mode 7: Automatic GPRS roaming inter-operator (the mobile equipment automatically reattaches itself to the network and reactivates its PDP context by changing the operator when reaching border areas. Only <class> is used.
<parameter>    Requested operation for <mode> (except for <mode>=4 and
0 Disabled
2 Enabled

Then try to register and attach again.

Thanks,
Nour

4

Yate bugs / Re: No GPRS connection with some devices

« on: January 24, 2019, 01:37:13 AM »

Hello John,

Having the MS in home network or roaming network depends on both the SIM and the network
if the network identifier matches  , the MS will believe its connected to its home network.

In your situation, there is a mismatch , so the telit modem thinks its in roaming mode and GPRS for roaming needs to be enabled with AT commands.
Like in mobile phones, when you switch to roaming , you need to activate data roaming option from the settings.
As when you check registration from AT , you can see it thinks its in roaming  (5).

Thanks,
Nour

5

Yate bugs / Re: No GPRS connection with some devices

« on: January 22, 2019, 07:05:33 AM »

Hello John

After checking further, I believe the modem is using SIM with different network identity than 00101 that is configured in the BTS.
To solve this:
1. Try SIM with the network identity 00101
2. Enable data roaming in the modem. 
https://www.multitech.net/developer/wp-content/uploads/2010/10/S000463C.pdf

Best regards,
Nour

6

Yate bugs / Re: No GPRS connection with some devices

« on: January 21, 2019, 06:05:06 AM »

Hello John,

The MS is registered to the network  and I can see the registration going ok on the wireshark capture.

IMSI            MSISDN
--------------- ---------------
222102402326785   2326785

What I noticed, the output of CREG is 5 which is registered / roaming.
-> is this the scenario you are trying to achieve?

On the other hand, I was checking for the tilet error message while triggering the attach and I found if there is a mismatch with auto attach command you will have this error message, can you please check:
https://m2msupport.net/m2msupport/atautoatt-gprs-auto-attach/
https://www.telit.com/technical-forum/product-specific/gm862-quadpygps/operation-not-allowed/

Let me know,
Nour

7

YateBTS / Re: BladeRF File or Device I/O failure when running YateBTS

« on: January 14, 2019, 05:51:41 AM »

What is the bladerf version and FPGA ?

8

YateBTS / Re: Has ciphering & encryption implemented on YateBTS?

« on: January 14, 2019, 05:16:09 AM »

Yes it is supported, version 11 is fully implemented
https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=2804

9

Yate bugs / Re: No GPRS connection with some devices

« on: December 05, 2018, 04:01:03 AM »

Hello John

For the problem with Honor mobile:
It has been isolated to be MS issue


For the problem with telit
I wish to have more outputs that is organized differently  , please

1. from the telnet session to BTS
mbts config Control.GSMTAP.GSM on
mbts config Control.GSMTAP.GPRS on
sniffer on

2. Make TCP dump
tcpdump -i any udp -w <file_name>.pcap

3. From telit , the following at commands
- Prepare and register outouts
AT+CPIN?
AT+CGREG?
AT+COPS?
AT+CSQ
- Attach to the network
AT+cgatt=1
AT+CGDCONT=1,”IP”,”internet”
at+cgdcont?
AT+CGACT=1,1

4. The file
 ggsn.log


Wish you a nice day

10

YateBTS / Re: BladeRF File or Device I/O failure when running YateBTS

« on: December 03, 2018, 01:38:42 AM »

Can you help me with some extra details please:
1. Do you have functionality for bladerf?
2. Do you see the same behavior even if you power cycle?
3. When you list USB devices, do you see bladerf?

11

Yate bugs / Re: No GPRS connection with some devices

« on: November 07, 2018, 07:03:47 AM »

Thank you for the outputs John

To establish the GPRS connection the UE needs to send GPRS attach request.
In the traces , the UE is not sending this message when its expected to see

Please see this picture for working GPRS in NiPC lenovo mobile
https://imgur.com/a/MA6ea6h

You can use the wireshark filter: gsm_a.dtap.msg_gmm_type  in the traces
This picture from working mobile with the filter
https://imgur.com/a/yvj83SW

I was wondering if you can share with me datasheet for the modem you are using ?