Xircom An Intel Company GEM3501 User Manual
Core Engine GSM/GPRS Modem Developer Guide Preliminary Draft: 7/6/2001
40
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
App > Modem AT+CBST=7,0,1
9600 baud, non-transparent mode
Modem > App
OK
Command is valid
10.1.2.6 Modem Status Commands
The following examples provide the AT commands and responses for querying the status
of the unit.
of the unit.
!
The following command checks to determine if the Core Engine modem has
successfully registered with the GSM network.
successfully registered with the GSM network.
App > Modem AT+CREG?
Get the registration status
Modem > App
+CREG: 0,1*
OK
Registered with home network
+CREG=0,2 registration in progress
+CREG=0,5 registered as roaming
*First character can be “0” or “1”: “0” for manual response, “1” for auto response.
!
The following command queries the strength of the RF coverage. This command
provides information about the RF coverage for the Core Engine modem.
provides information about the RF coverage for the Core Engine modem.
App > Modem AT+CSQ
Get the signal strength (for this command, do not
enter “?”)
enter “?”)
Modem > App
+CSQ: 20,99
OK
Receive signal strength = 20, -74 +/- 1 dBm
RXQUAL =99, unknown
Value
RSSI (dBm)
+/- 1 dBm
Value
RSSI (dBm)
0
< -110
16
-82
1
-110
17
-80
2
-109
18
-78
3
-108
19
-76
4
-106
20
-74
5
-104
21
-72
6
-102
22
-70
7
-100
23
-68
8
-98
24
-66
9
-96
25
-64
10
-94
26
-62