Ali Hamza Posted October 15, 2018 Share Posted October 15, 2018 Hi Folks, I am telecom enthusiast and my love to get into telecom stuff started since the day I opted my degree project with OpenBTS . Well, I keep reading about new projects and tutorials on youtube. It is few days back that I was testing my network in test environment with two phone connected and happen to take a dump of air interface in wireshark. I noticed few paging msgs with 'no identity' followed by few with TMSI/ TMSISs in them depending upon the paging type 1,2 and 3. Why there are few paging msgs with no identity? is it some Idle state broadcast paging ? Looking forward for reply Regards Quote Link to comment Share on other sites More sharing options...
NotPike Posted October 16, 2018 Share Posted October 16, 2018 Neat! Been a while since I played with GSM but do you have the pcap file so we can see what you're talking about? Quote Link to comment Share on other sites More sharing options...
Ali Hamza Posted October 17, 2018 Author Share Posted October 17, 2018 The dump is taken in test network deployed using OpenBTS. TMSI allocation is working and I can see TMSI for each handset on terminal however air interface dump captured using RTL-SDR doesn't show anything useful. Also, I am using Open Registration feature of OpenBTS setting. Can you guide how to share file via attachment option because when i select 'insert other media' , it says that i have no existing file to attach. How can I upload from my system? Quote Link to comment Share on other sites More sharing options...
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