M20 dialing no carrier

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Mark - 24 Nov 2003 17:14 GMT

Hi,

Can anybody help me?
I have a problem using M20 terminal for voice calls:

I get NO CARRIER message when dialing a number.
I have tried different settings (like port speed, data protocol etc.)
I get the same problem when dialing from both the Hyperterminal and Windows Dialer
The sim is OK, I have no problem using it in a cellular phone.

Thanks in advance,
Mark

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Peter_L - 24 Nov 2003 18:02 GMT

Hi Mark,

Could it be that you have forgotten to add the semicolon at the end of the
dial string?
If you just send ATD12345 then you do a data call, if you send ATD12345;
then you do a voice call.

If this does not help then send the command AT+CEER right after you have
received NO CARRIER and tell me the response.

Regards
Peter

> Hi,
>
[quoted text clipped - 8 lines]
> Thanks in advance,
> Mark

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Mark - 25 Nov 2003 10:00 GMT

Hi Peter,

Thank you for your advise. It was very helpful.

Now I can establish a voice call from the Hyperterminal using the
semicolon. The only problem is that Windows Dialer or any other
application using TAPI won't accept the semicolon returning an
"invalid number" error. Do you know of any other way to initialize the
modem for voice calls only?

Best Regards,
Mark

> Hi Mark,
>
[quoted text clipped - 22 lines]
> > Thanks in advance,
> > Mark

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Peter_L - 25 Nov 2003 18:29 GMT

Hi Mark,

Unfortunately I am not very familiar with TAPI.
All I can recommend is to use the Regedit and search for "Dialsuffix" and
enter the semicolon there.
Hopefully the driver will add it then automatically to the dialed number.

Regards
Peter

> Hi Peter,
>
[quoted text clipped - 35 lines]
> > > Thanks in advance,
> > > Mark

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