Author Topic: no service  (Read 833 times)

srormosh

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no service
« on: February 20, 2018, 03:57:15 AM »
Hello,

I followed step by step this tutorial: https://blog.strcpy.info/2016/04/21/building-a-portable-gsm-bts-using-bladerf-raspberry-and-yatebts-the-definitive-guide/ . I am able to connect to my bts, and I see the phones that connected to the bts. However, I cant send or get any message, nor get data on GPRS.

information about my bladeRF:

bladeRF-cli version: 1.5.1-git-unknown
libbladeRF version: 1.9.0-git-unknown

Firmware version: 1.9.1
FPGA version: 0.1.2
-----------------------------------------
I put those values:
MCC 001
MNC 01
LAC 1007

The rest of it is the same as in the guide

Somebody may help me?  :) 

Thanks! 

Monica Tepelus

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Re: no service
« Reply #1 on: February 23, 2018, 02:07:23 AM »

srormosh

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Re: no service
« Reply #2 on: February 26, 2018, 08:26:12 AM »
Thanks for your answer.
but it doesn't work, yet.
I'm trying to do some search: https://wiki.yatebts.com/index.php/Mbts_gprs_list
When I do "mbts gprs list" in telnet (the command: "telnet 0 5038") I get something like:

   ms#1, TLLi=8850330b .........
                    GMM Context:   imsi="current phone's imsi" ptsmi=0x57001 tlli=0x0057002 state=GmmRegisterationPending age=0 idle=0 IPs=none
                     TA=2 TE=(0.0)..........
                     dateRF: 7% (20) recent:.7% (20) low:.8% (16) tbfER: 0% (5)
                     rrbpER:.2% (9) recent:.2% (9) low:.3% (3) ccchER:0% (1) recent:1.0% (1) low:1.0% (1)
       TBF#5 TFI=5 TBF_TLLI=0x88.. mtMS= MS#1, TLLI=88.., c005.. mtDir=RLCDIr::Up
                      channels: down=(0:2) up=( 0:2,usf=1)
                      msState=TBFState::DataWating1 mtAttached=1 mtTFI=5 mtTlli=0x88..
    PDCH ARFCN=75 TN=1 FER=100%
    PDCH ARFCN=75 TN=2 FER=43%
    PDCH ARFCN=75 TN=3 FER=100%


I dont know why the IPs is none. and why I got high rates in the FER.
Please, I'll appreciate any kind of help.
Thanks

srormosh

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Re: no service
« Reply #3 on: February 28, 2018, 02:24:39 AM »
I finally succeed to solve the last problem.
I used the university's network and I guess they blocked me.   

Now, I used other network. My phone got an ip.
I'm trying to send http request. I can see in wireshark that my phone send DNS requests to the gateway and also TCP request to the right destination, but I dont get any response. neither the gateway nor the destination.

Someone know why?
I did ip forwards and added the rule to iptables 

Thanks!