I don't believe burst_ind is designed to sniff SMS. Check out the sniffing page on the website: http://bb.osmocom.org/trac/wiki/Sniffing (the site says layer23, but it's actually ccch_scan; I would update but I don't have an account)

This presentation might help: https://www.youtube.com/watch?v=ZrbatnnRxFc

You should probably also learn about GSM (not sure how far this website can take you though): http://gsmfordummies.com/

OsmocomBB, even burst_ind, is not really a sniffing tool; you will need to do more work yourself.

Josh

On Thu, May 17, 2012 at 7:53 PM, Chengcheng Gou gouchengcheng@gmail.com wrote:

first,the network is not encrypt.

I test burst_ind to receive SMS in a cell, but I can`t receive the SMS transfered in my two  phone, the two phone is lock to the cell, do I miss anything ?

Another problem I am only interest in SMS but not voice,and how to difference  the two types of SDCCH?

thanks!