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Multi-Tech Systems 92U03G23710 Manuale Utente

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Chapter 4 - SocketModem Interfaces
11
Chapter 4 – SocketModem Interfaces
This chapter describes the SocketModem interfaces.
· 
Flashing LED
· 
SIM Interface
· 
RF Interface
Flashing LED
The flashing LED signal is used to indicate the working mode of the SocketModem.
LED and SocketModem Status
Signal
SocketModem Status
OFF
Download mode or switched OFF>
Continuously lit
Switched ON (not registered on the network)
ON
Flashing
Switched ON (registered on the network)
SIM Interface
The internal SIM interface of the SocketModem supports 3V SIMs only.
Note:
 This interface is fully compliant with GSM 11.11 recommendations concerning the SIM functionality.
Five Signals Are Available
SIMVCC: SIM power supply.
SIMRST: reset.
SIMCLK: clock.
SIMDATA: I/O port.
SIMPRES1 SIM card detect.