Kindly find the newest StarGate firmware in attachment. We manage to change AoC settings and right now you can specify it for each defined tariff. You can make settings as follows: 1. Connect to the stargate via hyperterminal – please do not use configuration tool at this moment 2. Check parameters for each GSM outgoing group you would like to use AoC for – use command at&v# where # is from 1 up to 8. Set a pseudo parameter from previous AoC version to 0. 3. AoC parameters are tariff groups are: at%H#1..4=m0/a0/s0,m1/a1/s1,m2/a2/s2,m3/a3/s3,dayx,weekx - 1..4 ...parameters pro SIM1..SIM4 - s# ...interval for AOC sending (0=off, 1..1200sec) for tariffs 0..3 H11=0/0/0,0/0/0,0/0/0,0/0/0,0,0 Please do not change any other parameters then s#. Let me know the results. We manage this firmware in real pressure, so let me know your feedback. I am really looking forward to your reply. Best regards