Yate server > Yate bugs

No GPRS connection with some devices

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John:
Let's split the problem:

(1) for telit we have this kind of behavior

Device:
GT864_QUAD with modem GE865_QUAD with virmware revision 10.xxxx.03


--- Code: ---https://www.telic.de/en/downloads/downloads-m2m-terminals
https://www.telic.de/Load/Telemetry/M2M_Terminals/GT864_QUAD/EN_UserManual_GT864-QUAD-PY.pdf
https://www.telic.de/Load/Telemetry/M2M_Terminals/GT864_QUAD/EN_Datasheet_GT864-Quad.pdf

--- End code ---

the problem is when i try to activate context i got error.


--- Code: ---AT+CGACT?
ERROR

--- End code ---

and when i try to use it in a "normal" network i got full working gprs.
But now i'm going to retry and got more log with error reporting and many try of context activation.

(2) With that filter in wireshark i see that honor device sent a GPRS suspension and then go to RAU loop, see attach

EDIT:
added telit at command log + wireshark log + yate-vvvvv log, note that every time i try to activate gprs with at command i have about a mitues of lag on putty and i got 3101 error on terminal and :GSM RLC/MAC: PACKET_DOWNLINK_DUMMY_CONTROL_BLOCK (37) (Downlink)

nour:
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

John:
Hi Nour,
thanks for your reply

i'm not able to get sgsn log, i don't know why because in my conf i have


--- Code: ---
[sgsn]
;Add layer-3 messages to the GGSN.Logfile, if any.
Debug=yes


--- End code ---

link for attach:

https://drive.google.com/file/d/1Y_CUePvmYDgTUyXGXQg_EiABZ8Q3hG9S/view?usp=sharing



tell me if you need more log o more output
John

nour:
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

John:
Hi nour,


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

--- End quote ---

nope, i would have gprs connection, telit registers to gsm i can have calls and sms but no gprs connection.


--- Quote ---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:

--- End quote ---

ty for this indication but i think that this is not the problem, the telit should be connected instead i cannot navigate.
BTW i'll try to disable autoattach later and update this message, stay tuned.

ty for your reply
John


EDIT
as i said it was the same, no gprs connection and this error as always

--- Code: ---15:34:33.7,70110: 15:34:33.7@@@failed tbf cause=3101 TBF#10 TFI=10 TBF_TLLI=0x7c1cb512 mtMS= MS#10,TLLI=7c1cb512 mtDir=RLCDir::Up
channels: down=( 0:2) up=( 0:2,usf=1)
mtState==TBFState::DataTransmit mtAttached=1 mtTFI=10 mtTlli=0x7c1cb512
mtMsgExpectedBits=0x0 mtMsgAckBits=0x2
mtUnAckMode=0 OnCCCH=0 mtAssignCounter=1 N3101=21
msNumDataUSFGrants=21 msAckNackUSFGrant=0 Pacch= idle=0
TA=2 TE=(0.00) RSSI=(-28) CV=(18) ILev=(0) RXQual=(0) SigVar=(0) ChCoding=(3) RXLev=(0) mLastAlpha=10 mLastGamma=31 mGamma=31
VR=0 VQ=0 stalled=0 mNumUpBlocksSinceAckNack=0 mtUpState=0
blocks: total=0 unique=0 grants=21


--- End code ---

and mbts gprs list -v gime to me


--- Code: ---MS#9,TLLI=7f282fd6 rrmode=PacketIdle Bytes:0up/0down Utilization=0%
GMM state unknown
TA=2 TE=(0.00) RSSI=(-28) CV=(19) ILev=(0) RXQual=(0) SigVar=(0) ChCoding=(3) RXLev=(0) mLastAlpha=10 mLastGamma=31 mGamma=31
dataER:0% (0) recent:0% (0) tbfER:1.0% (1)
rrbpER:0% (1) recent:0% (0) ccchER:0% (0) recent:0% (0)
DownlinkQ:bytes=(0) delay=(0)
TBFs: total=1 failed=1
current=()
USFs=( 0 0 0 0 0 0 0 0 )
channels: down=( 0:2) up=( 0:2,usf=0)
msNumDataUSFGrants=0 msAckNackUSFGrant=-1 Pacch= idle=1381
 PDCH ARFCN=512 TN=1 FER=100%
Reservations=()
USFList=( 1=>free 2=>free 3=>free 4=>free 5=>free 6=>free)
TFI=()
 PDCH ARFCN=512 TN=2 FER=100%
Reservations=()
USFList=( 1=>free 2=>free 3=>free 4=>free 5=>free 6=>free)
TFI=()
 PDCH ARFCN=512 TN=3 FER=100%
Reservations=()
USFList=( 1=>free 2=>free 3=>free 4=>free 5=>free 6=>free)
TFI=()

--- End code ---

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