SIM Toolkit behaving differenting on different phones

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

mrobinton@gmail.com - 21 Mar 2007 16:28 GMT

I am trying to send up a proactive command for SEND_SS. The command I
have works on some phones and responds with "Command Data Not
Understood" on other phones. Any idea why some phones don't like my
command and others seem to be fine with it?

Reply to this Message

John Henderson - 21 Mar 2007 16:45 GMT

> I am trying to send up a proactive command for SEND_SS. The
> command I have works on some phones and responds with "Command
> Data Not Understood" on other phones. Any idea why some phones
> don't like my command and others seem to be fine with it?

All proactive SIM commands are optional. You need to look at
the STK Profile of each device to see if "SEND SS" is
implemented. For "SEND SS", this is indicated by whether bit 3
of byte 4 in the profile download result is set (counting from
1). See GSM 11.14, section 5.

John

Reply to this Message

mrobinton@gmail.com - 21 Mar 2007 18:50 GMT

Yes, I checked had the terminal profile. send SS is listed as an
accepted command.

Generally a "command not understood" (32) is for some sort of mal
formed tlv in the data section. But
i'm not sure why it would be mal formed for some phones and fine for
others.

> mrobin...@gmail.com wrote:
> > I am trying to send up a proactive command for SEND_SS. The
[quoted text clipped - 9 lines]
>
> John

Reply to this Message

John Henderson - 21 Mar 2007 21:03 GMT

> Yes, I checked had the terminal profile. send SS is listed as
> an accepted command.
>
> Generally a "command not understood" (32) is for some sort of
> mal formed tlv in the data section. But i'm not sure why it
> would be mal formed for some phones and fine for others.

OK. I once had a problem I never resolved with "SEND USSD" on a
phone which supported the command according to its STK profile.
Your problem sounds similiar. I got a TLV result of

810301120082028281830132

(command data not understood). If you want to post your command
TLV, I'll compare it against my notes for the problem I was
having.

John

Reply to this Message

Tony Planinac - 26 Mar 2007 19:05 GMT

> I am trying to send up a proactive command for SEND_SS. The command I
> have works on some phones and responds with "Command Data Not
> Understood" on other phones. Any idea why some phones don't like my
> command and others seem to be fine with it?

different syntax from phone to phone

Reply to this Message