immediate NO CARRIER after ATD command

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drasko.andric@ri-ing.hr - 01 Jun 2006 09:10 GMT

I use TC35 and everything works ok with SIM card "A". When I put SIM
card "B" (different GSM operator) I can't dial using ATD. I get
immediate response NO CARRIER (data) or +CME ERROR : 21 (invalid index)
on voice call!? If I put SIM card in phone, it works ok. Anybody knows
which setting can cause behavior like that?

Thanks
Drasko

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John Henderson - 01 Jun 2006 10:30 GMT

> I use TC35 and everything works ok with SIM card "A". When I
> put SIM card "B" (different GSM operator) I can't dial using
> ATD. I get immediate response NO CARRIER (data) or +CME ERROR
> : 21 (invalid index) on voice call!? If I put SIM card in
> phone, it works ok. Anybody knows which setting can cause
> behavior like that?

"+CME: 21", "invalid index" sounds to me like an error resulting
from the

ATD><memory location>

syntax version of the "ATD" command. That is, an attempt to
dial a specific (but empty or non-existent) phonebook entry.

Are you using the

ATD<number>

or

ATD><memory location>

syntax?

John

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Drasko - 01 Jun 2006 18:10 GMT

I am using ATD<number> (ATD<number>; for voice call)! I also don't
understand the meaning of "invalid index" in this context!? Ant same
sequence works with other SIM card.

> > I use TC35 and everything works ok with SIM card "A". When I
> > put SIM card "B" (different GSM operator) I can't dial using
[quoted text clipped - 22 lines]
>
> John

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John Henderson - 01 Jun 2006 22:48 GMT

> I am using ATD<number> (ATD<number>; for voice call)! I also
> don't understand the meaning of "invalid index" in this
> context!? Ant same sequence works with other SIM card.

The only index I can think of that's relevant to "ATD" is the
lookup index for phonebook dialling. But that's done through
the

ATD>

version of the command.

Are you perhaps encountering a SIM PIN security lockout? Have a
look at

AT+CPIN?

John

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Drasko - 02 Jun 2006 07:20 GMT

No, it is ok. I can send and receive SMS.
Also I can't explain NO CARRIER immediate after ATD... data call!?

> > I am using ATD<number> (ATD<number>; for voice call)! I also
> > don't understand the meaning of "invalid index" in this
[quoted text clipped - 14 lines]
>
> John

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John Henderson - 08 Jun 2006 22:23 GMT

> No, it is ok. I can send and receive SMS.
> Also I can't explain NO CARRIER immediate after ATD... data
> call!?

Maybe have a look at the facility locks with "AT+CLCK" and
<mode> = 2 (query status) for the existence of a fixed
phonebook dialling lock.

I still get the feeling that your number is being treated as a
phonebook index. I get your "+CME ERROR: 21" (with a Wavecom
modem) if I deliberately try for a non-existent phonebook entry
with something like "ATD>987654321;".

John

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