Xircom An Intel Company GEM3501 User Manual
Core Engine GSM/GPRS Modem Developer Guide Preliminary Draft: 7/6/2001
44
Part Number: 07100026, Revision: 002
Confidential
© 2001 Xircom, Inc., an Intel company All rights reserved.
All trademarks and copyrights are the property of Xircom, Inc., an Intel company
All trademarks and copyrights are the property of Xircom, Inc., an Intel company
10.2.2 Modem RECEIVE SMS (Text)
The following example provides the AT command for requesting that the Core Engine
modem list received SMS messages. This string requests that the modem send (over the
RS232 interface) all of the messages that have been received.
modem list received SMS messages. This string requests that the modem send (over the
RS232 interface) all of the messages that have been received.
App > Modem AT+CMGL=”ALL”
Read ALL messages received, including status,
originator, message number and message content
(if messages are present)
originator, message number and message content
(if messages are present)
Modem > App +CMGL: 1, "REC UNREAD", "12017572673"
Hello, how are you?
OK
10.2.3 SIM Data Provisioning Verification (Optional)
At this time the user has the option of verifying the data communications function from the
users system application to the modem prior to connection to the CPE. To check this
path, have the user’s system application send a data stream to the modem and observe
the data stream on the diagnostic terminal for verification of correct performance.
users system application to the modem prior to connection to the CPE. To check this
path, have the user’s system application send a data stream to the modem and observe
the data stream on the diagnostic terminal for verification of correct performance.
10.2.4 Match Modem Serial port to CPE
The modem is now ready to be interfaced with the CPE. The serial port settings, data
type, and flow control between the modem and the CPE need to be matched. Reference
Table 9 for the Core Engine modem initialization defaults.
type, and flow control between the modem and the CPE need to be matched. Reference
Table 9 for the Core Engine modem initialization defaults.
1. Match the bearer type selection (transparent deviation on different sheet or non-
transparent data).
2. Match the flow control.
3. Match the serial interface parameters (baud rate, 8 data bits, 1 stop bit, no parity).
4. Set up the terminal serial interface parameters to match the modem (if modem has
changed).
5. Save parameters to non-volatile memory. (AT&W command, AT+CSAS)
10.2.5 Verify Setup
1. Power down the unit
2. Wait 5 seconds and then re-apply power to verify commands were saved properly
3. Power
down
again.
10.2.6 Connect Primary Serial Port Cable
Plug the RS232 cable from the CPE into the Primary Serial Port connector (DB-9) on the
Core Engine carrier board. The connectors are keyed so it can only be installed one way.
Core Engine carrier board. The connectors are keyed so it can only be installed one way.