Laipac Technology Inc. M2M 3350 User’s Manual & Reference Guide
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 AT
Command
Module Comments
AT+CREG? CREG=<mode>,
1
Modem Synchronized on the network
CREG=<mode>,
2
Sync lost, re-sync attempt
Module
Synchro
Checking
CREG=<mode>,
0
Modem not synchronized on network,
no synch attempt
RING
ATA
Answer
the
call
Receiving an
Incoming Call
OK
ATD 1234;
Don’t forget the <;> at the end for
VOICE call
OK
Communication
established
CME
ERROR:
11
PIN code not entered
Initiate a
Call
CME ERROR: 3 AOC credit exceeded or communication
already established
ATD 911;
Don’t forget the <;> at the end for
VOICE call
Initiate an
Emergency Call
OK
Communication
Loss
NO
CARRIER
ATH
Hang Up
OK
AT+CPIN=1234
OK
CME
ERROR:
16
Incorrect PIN code
Enter PIN Code
CME ERROR: 3
PIN already entered
AT&W
Store
Parameters
In E2P
OK
The configuration settings are stored
into E2P
© 2002-2007 by Laipac Technology Inc. All Rights Reserved. Page 25
