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Laipac Technology Inc.
6.5
Headphone Jack
The modem is equipped with a 2.5mm stereo headphone jack so that you can connect a
speaker/microphone one-piece headset. Not all headsets work as every manufacturer uses a
different pinout. We have tried to select a general pinout to be compatible with most headsets.
Keep in mind that you can't transmit voice calls through the USB or RS232 connector. If you
wish to make a call, you must connect the headphone jack to the modem and not to your PC.
7
COMMANDS
Note: the following commands can be entered using HyperTerminal in Windows with the settings
115200, 8, None, 1, None
Description
Module
Synchro
Checking
Receiving an
Incoming Call
Initiate a
Call
Initiate an
Emergency Call
Communication
Loss
Hang Up
AT+CPIN=1234
Enter PIN Code
Store
Parameters
In E2P
© 2002-2007 by Laipac Technology Inc. All Rights Reserved.
AT
Command
AT+CREG?
CREG=<mode>,
CREG=<mode>,
CREG=<mode>,
ATA
ATD 1234;
CME ERROR:
CME ERROR: 3
ATD 911;
NO CARRIER
ATH
CME ERROR:
CME ERROR: 3
AT&W
M2M 3350 User's Manual & Reference Guide
Module
Modem Synchronized on the network
1
2
Modem not synchronized on network,
0
RING
OK
Don't forget the <;> at the end for
OK
11
AOC credit exceeded or communication
Don't forget the <;> at the end for
OK
OK
OK
16
OK
The configuration settings are stored
Comments
Sync lost, re-sync attempt
no synch attempt
Answer the call
VOICE call
Communication established
PIN code not entered
already established
VOICE call
Incorrect PIN code
PIN already entered
into E2P
Page 25
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