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Author immediate NO CARRIER after ATD command
drasko.andric@ri-ing.hr

2006-06-01, 5:48 am

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

John Henderson

2006-06-01, 5:48 pm

drasko.andric@ri-ing.hr wrote:

> 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
Drasko

2006-06-01, 5:48 pm

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.


John Henderson wrote:
> drasko.andric@ri-ing.hr wrote:
>
>
> "+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


John Henderson

2006-06-01, 11:48 pm

Drasko wrote:

> 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
Drasko

2006-06-02, 5:48 am

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

John Henderson wrote:
> Drasko wrote:
>
>
> 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


John Henderson

2006-06-08, 11:48 pm

Drasko wrote:

> 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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