Good Evenning:

My configuration for OpenBTS:

1-OpenBTS 2.6 Mamou
2-GNU Radio 3.4.2
3-Asterisk 1.4.42
4-USRP 1 + DaugtherBoard RFX900 +Clock Tamer GPS
5-Kalibrate v0.4.1

When I prove ./OpenBTS , it show constantly this:

Welcome to OpenBTS.  Type "help" to see available commands.
OpenBTS> 1340578320.3426 NOTICE 3077921648 Transceiver.cpp:151:pushRadioVector: dumping STALE burst in TRX->USRP interface
1340578320.3564 NOTICE 3077921648 Transceiver.cpp:151:pushRadioVector: dumping STALE burst in TRX->USRP interface
1340578320.4206 NOTICE 3077921648 Transceiver.cpp:151:pushRadioVector: dumping STALE burst in TRX->USRP interface
1340578320.5779 NOTICE 3077921648 Transceiver.cpp:151:pushRadioVector: dumping STALE burst in TRX->USRP interface
1340578320.6141 NOTICE 3077921648 Transceiver.cpp:151:pushRadioVector: dumping STALE burst in TRX->USRP interface
1340578322.3084 NOTICE 3077954416 USRPDevice.cpp:336:setTxGain: Setting TX PGA to -20.0000 dB.
1340578328.3094 NOTICE 3077954416 USRPDevice.cpp:336:setTxGain: Setting TX PGA to -20.0000 dB.
1340578334.3104 NOTICE 3077954416 USRPDevice.cpp:336:setTxGain: Setting TX PGA to -20.0000 dB.
1340578430.3257 NOTICE 3077954416 USRPDevice.cpp:336:setTxGain: Setting TX PGA to -12.5893 dB.
1340578436.3267 NOTICE 3077954416 USRPDevice.cpp:336:setTxGain: Setting TX PGA to -10.0000 dB.
1340578442.3274 NOTICE 3077954416 USRPDevice.cpp:336:setTxGain: Setting TX PGA to -7.9433 dB.
1340578448.3283 NOTICE 3077954416 USRPDevice.cpp:336:setTxGain: Setting TX PGA to -6.3096 dB.
1340578454.3290 NOTICE 3077954416 USRPDevice.cpp:336:setTxGain: Setting TX PGA to -5.0119 dB.

Thanks for your colaboration.