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???
11/13/06 08:25
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#127861 - What "Interfacing"?
Responding to: ???'s previous message
Ap Charles said:
Interfacing isnt a problem

Quite possibly not, for the electrical & protocol "interfacing", but what about the physical (mechanical) "interface"?
How can the tiny little SIMs be used practically?

Jan mentioned POTS phone cards
http://www.8052.com/forumchat/read.phtml?id=127781
but I guess they're the full-size (credit-card size) smart cards, which are designed to be frequently inserted & removed in readers. GSM SIMs (unless you have a source of the old "full-size" SIMs) sound a bit fiddly to me, and I don't see many sockets designed for quick & easy insertion & removal...


And anyhow, it still leaves many questions unanswered:

What purpose do you envisage that the SIMs will serve in this system?
Do you have a source of suitable SIMs?




List of 22 messages in thread
TopicAuthorDate
GSM SIMs            01/01/70 00:00      
   Explain...            01/01/70 00:00      
      We are fine            01/01/70 00:00      
         Go straight to the Horse's Mouth            01/01/70 00:00      
         What "Interfacing"?            01/01/70 00:00      
            I'll answer for fun            01/01/70 00:00      
               Big SIMs            01/01/70 00:00      
            What "Interfacing"?            01/01/70 00:00      
               but would you throw away all the radio part...            01/01/70 00:00      
               Missing the point!            01/01/70 00:00      
                  Mute?            01/01/70 00:00      
               Abbreviations            01/01/70 00:00      
   cheep access-control system            01/01/70 00:00      
      cheep access-control system            01/01/70 00:00      
         Meaningless            01/01/70 00:00      
      A little bird told me...            01/01/70 00:00      
         Meaningless            01/01/70 00:00      
            Not incorrect            01/01/70 00:00      
               Not incorrect            01/01/70 00:00      
                  Not useful            01/01/70 00:00      
                     one way            01/01/70 00:00      
                     I have a SIM in front of me; it has 13 contact pad            01/01/70 00:00      

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