SIM card interfacing to read phonebook

Hi,

Does anyone here has experience interfacing a GSM SIM card to a microcontroller?
Can anyone point to links for GSM SIM card standards?
We are planning a phone product that interfaces to GSM SIM card to read the
phonebook from it.
What is the physical interface that should be used to interface the SIM card
to the microcontroller?


Thank You,
Rajeev

> Does anyone here has experience interfacing a GSM SIM card to a
microcontroller?
> Can anyone point to links for GSM SIM card standards?

I have done this along time ago (i haven't read the phone book but other
records...), hopefully at least a bit is still correct...
As far as i remember you can feed a 3,6864 MHz Clock into the SIM and use a
normal UART to communicate with the card (9600 Baud ?). Perhaps pay
attention the card support meanwhile 3V instead of 5V. Don't know if you can
still feed in 5V.

Regards,

        Martin

On 3 Apr 2004 19:10:29 -0800, Rajeev wrote:

>We are planning a phone product that interfaces to GSM SIM card to read the
>phonebook from it.

Are you aware that quite a lot of newer phones don't store phonebook
info on the SIM card any more, due to the limited memory available?
Several Nokia phones are like that, for example.

-- 
  Max

> Are you aware that quite a lot of newer phones don't store phonebook
> info on the SIM card any more, due to the limited memory available?

Where do the nokia phones store the data?

Dave

"David Huseby" <dave@linuxprogrammer.org> wrote in message
news:1078viv3l4ggj4b@corp.supernews.com...
> > Are you aware that quite a lot of newer phones don't store phonebook
> > info on the SIM card any more, due to the limited memory available?
>
> Where do the nokia phones store the data?
>
> Dave

Hi Dave,

Most new Nokia phones seem to allow use of both the SIM and phone memory. On
my 6610 it defaults to that mode and the relatively few numbers I have in
the address book are all in the SIM card so I assume it uses that first
until the SIM memory is full and then reverts to the phone memory. It has
setup options for SIM, phone memory or SIM + phone.


Regards,

Peter Johnson, CommLinx Solutions
http://www.commlinx.com.au/

Peter Johnson <peter@nospam.commlinx.com.au> says...

>"David Huseby" <dave@linuxprogrammer.org> wrote...
>>
>> Where do the nokia phones store the data?
>
>Most new Nokia phones seem to allow use of both the SIM and phone memory. On
>my 6610 it defaults to that mode and the relatively few numbers I have in
>the address book are all in the SIM card so I assume it uses that first
>until the SIM memory is full and then reverts to the phone memory. It has
>setup options for SIM, phone memory or SIM + phone.

Very nice option to have if you have multiple simm cards.


-- 
Guy Macon, Electronics Engineer & Project Manager for hire. 
Remember Doc Brown from the _Back to the Future_ movies? Do you 
have an "impossible" engineering project that only someone like 
Doc Brown can solve?  My resume is at http://www.guymacon.com/ 

David Huseby <dave@linuxprogrammer.org> wrote:
> > Are you aware that quite a lot of newer phones don't store phonebook
> > info on the SIM card any more, due to the limited memory available?

> Where do the nokia phones store the data?

In the phone's own non-volatile memory.  Since those modern GSM
"smart" phones that include just about everything but the kitchen sink
in their feature list need megabytes of flash memory for their
operating system anyway, using part of that to store phone book data
in is essentially a feature for free.  Plus, you get to decide more
freely what you store in those entries.  E.g., AFAIK SIMs fail to
support stuff like multiple phone numbers (and other extra info, like
email and physical addresses) per name.

And there's simply more space on the phone than on the SIM, at least
these days.  I know a person with upwards of two *hundred* phonebook
entries kept in a Nokia --- the SIM couldn't hold more than about a
third of that.

-- 
Hans-Bernhard Broeker (broeker@physik.rwth-aachen.de)
Even if all the snow were burnt, ashes would remain.

On 8 Apr 2004 00:29:17 GMT, Hans-Bernhard Broeker
<broeker@physik.rwth-aachen.de> wrote:

>E.g., AFAIK SIMs fail to
>support stuff like multiple phone numbers (and other extra info, like
>email and physical addresses) per name.
My Samsung supports multiple numbers per name on the SIM, but I
suspect that it is faked by the software.

Stephen
--
Stephen Pelc, stephenXXX@INVALID.mpeltd.demon.co.uk
MicroProcessor Engineering Ltd - More Real, Less Time
133 Hill Lane, Southampton SO15 5AF, England
tel: +44 (0)23 8063 1441, fax: +44 (0)23 8033 9691
web: http://www.mpeltd.demon.co.uk - free VFX Forth downloads

Hans-Bernhard Broeker <broeker@physik.rwth-aachen.de> says...

>And there's simply more space on the phone than on the SIM, at least
>these days.  I know a person with upwards of two *hundred* phonebook
>entries kept in a Nokia --- the SIM couldn't hold more than about a
>third of that.

The functions of the cellphone and the PDA are merging.

-- 
Guy Macon, Electronics Engineer & Project Manager for hire. 
Remember Doc Brown from the _Back to the Future_ movies? Do you 
have an "impossible" engineering project that only someone like 
Doc Brown can solve?  My resume is at http://www.guymacon.com/ 

Guy Macon <http://www.guymacon.com> wrote:
> The functions of the cellphone and the PDA are merging.
> 

Yes, into devices that are too big to be comfortable phones and too
small to be comfortable PDAs. 

pete
-- 
pete@fenelon.com "there's no room for enigmas in built-up areas"