CHAPTER 3 – SPECIFICATIONS
SocketModem EV-DO MTSMC-EV3 Device Guide
Pinout Specifications
Device reset (active low)
Request to send (active low)
Received data (active low)
Transmitted data (active low)
Ring indicator (active low)
Data set ready (active low)
Clear to send (active low)
Data carrier detect (active low)
Data terminal ready (active low)
User configurable general purpose I/O
User configurable general purpose I/O
User configurable general purpose I/O
User configurable general purpose I/O
Link status (active low, can sink up to 150mA)
1
A hyphen (-) indicates a range of acceptable logic levels.
Pin 58
Note: Pin 58 may or may not be available on some SocketModems.
Subscriber Carrier Mode is OFF or running in SLEEP or ALARM mode.
No PIN entered, network search in progress, ongoing user authentication, or network
login in progress.
75 ms ON / 75 ms OFF /
75 ms ON
3 s OFF
Flashing or Blinking
One or more EDGE/GPRS/CDMA contexts activated. Indicates EDGE/GPRS/CDMA data
transfer: When a transfer is in progress, the LED goes on within 1 second after data
packets were exchanged.
Flash duration is approximately 0.5 s.
Connected to remote party.
Connected to remote party or parameter exchange while call is set up or
disconnected.
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