On Tue, Jun 23, 2009 at 08:29:33PM +0200, Andreas.Eversberg wrote: The SI is highly bit-packed information, you will need to read the specs in order to understand and parse it. I don't have any more convenient information, I have to do the same whenever I want to change something. We could certainly need some code to pack/unpack the information from a more conveninet C structure into the actual on-air format. The "MS Power" IE is independent of the BS power or BS power class. It is an absolute value in dBm as specificed in GSM05.05 and the definition/mapping between power IE values and dBm is specified in tables of GSM 05.05. I have committed some unused code for this translation to dBm in http://bs11-abis.gnumonks.org/trac/changeset/fcd2445d05e24c20310790ef0041c8… - search for ms_pwr_ctl_lvl() which you can call with the desired dbm level (i.e. 50 which is higher than any phone can transmit) and it will return with the highest possible value for the BS power IE. If the phone then supports less than that, it will in turn use the maximum it has. For the BS11 in GSM900, the maximum seems to encode to '0'. good news! -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)