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Cellular Phone Forum / General / GSM / April 2007STK AT Command Support
Does anyone know of any handsets that actually support AT commands via SIM Toolkit? I have a Siemens SL55 that claims to (in its terminal profile) but doesn't understand the command (0x34) and the Blackberry phones I have don't even send Terminal Responses. Thanks, ~Nathan > Does anyone know of any handsets that actually support AT > commands via SIM Toolkit? I have a Siemens SL55 that claims to > (in its terminal profile) but doesn't understand the command > (0x34) and the Blackberry phones I have don't even send > Terminal Responses. I haven't used an SL55, but my Siemens S55 makes a reasonable job of STK commands. Care to share the actual TLV command you're trying, and the phone's response. At least I can try it on an S55. John Most of the STK commands I send work; the one I'm sending is D0 11 81 03 01 34 00 82 02 81 82 A8 06 41 54 2B 47 4D 49 SW: 90 00(response to Fetch) and the terminal response is A0 14 00 00 0C 81 03 01 34 00 82 02 82 81 83 01 31 SW: 90 00 I interpret this as "Command type not understood". This seems odd, since the terminal profile is 7F FF FF FF 7F 0F 00 DF 7F 00 00 1F 23 00 00 00 03 If it were a problem with the AT command itself, I would have expected an error with regards to the command data. Thanks, ~Nathan > > Does anyone know of any handsets that actually support AT > > commands via SIM Toolkit? I have a Siemens SL55 that claims to [quoted text clipped - 8 lines] > > John > Most of the STK commands I send work; the one I'm sending is > D0 11 81 03 01 34 00 82 02 81 82 A8 06 41 54 2B 47 4D 49 SW: [quoted text clipped - 6 lines] > If it were a problem with the AT command itself, I would have > expected an error with regards to the command data. I think you're getting the "Command type not understood by ME" response because the command isn't supported in the terminal profile. My Siemens S55 has an identical terminal profile, which I can read with a direct "AT" command: at^sstk=? ^SSTK: 7FFFFFFF7F0F00DF7F00001F2300000003 The "run AT command" (proactive SIM command number 34) implementation is given by bit 6 in byte 8 of the terminal profile (GSM 11.14, clause 5.2). 7F byte 1 FF byte 2 ... 00 byte 7 DF byte 8 "DF" hex is "11011111" binary, in which the only bit not set is bit 6 (the one you need to be set). John > > Most of the STK commands I send work; the one I'm sending is > > D0 11 81 03 01 34 00 82 02 81 82 A8 06 41 54 2B 47 4D 49 SW: [quoted text clipped - 31 lines] > > John You're right. The terminal profile I put into my decoder app wasn't the right one. Anyway, are there any phones that do actually support AT commands via STK? ~Nathan > Anyway, are there any phones that do actually support AT > commands via STK? I'm not sure how to read the terminal profiles of the few non-Siemens phones I have access to. In my haste I misread your original message as you wanting to perform STK commands via AT commands, not the other way around. John |
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