At commands supported when sim card removed, At commands for amps operation – Multi-Tech Systems CDMA Wireless Modem User Manual
Page 170
Chapter 20 – Reference Information
Multi-Tech Systems, Inc. CDMA Wireless AT Commands - PN S000294C
170
AT Commands Supported When SIM Card Removed
The following lists the AT commands that are supported in a RUIM modem (the modem needs a SIM card to
operate) when the SIM card is not present.
# List
AT Command
Note and Explanation
1
+IPR
Set modem fixed baud rate
2
+CMEE
Display the error code
3
+CCLK
Clock management
4
+CBC
Battery charge
5
+WIND
General status indication
6
ATE
Set modem local echo
7
+CPOF
Modem Offline mode
8
+CFUN
Reset the modem
9
+WGMI
Manufacturer identification
10
+WGMM
Model identification
11
+CGMR
Revision identification
12
+CGSN
Electronic serial dumber
13
+CSCS
TE character set selection
14
+CPAS
Phone activity status
15
+CRMP
Ring melody playback
16
+CRSL
Ringer sound level
17
+CSQ
Signal quality
18
+CREG
Network registration and roaming
19
$QCDMG
Transition to diagnostics monitor
20
ATIx
Request Modem Information (x = 0-7)
AT Commands for AMPS Operation
In the APMS mode, only the voice call is applicable. Although user can still issue almost all of AT
commands, the most of the AT commands are not applicable for AMPS operation, e.g. data commands,
SMS, FAX, RUIM commands, service programming etc.
The following table list the AT commands that are meaningful for AMPS operation. Please note that these
listed AT commands are also applicable in CDMA operations.
# List
AT command
Note and Explanation
1
+COPS
+COPS=2,n (n=0,1)
2
ATD
Making a voice call
3
ATA
Answer a voice call
4
ATDL
Redial last #
5
+VGR
Change the receiving voice volume
6
+VGT
Change the transmitting voice volume
7
+CMUT
Mute the microphone
8
A/
Repeat last command
9
ATS0
Set auto answer
10
ATH
Hang up a voice call
11
ATIx
Request Modem Information (x = 0-7)
12
+IPR
Set modem baud rate
13
+CNUM
Display modem directory #
14
+CGSN
Display modem ESN # (in hex format)
15
+CMEE
Display the error code
16
+WPRL
Read the PRL version
17
+CPOF
Modem OFF mode
18
+CFUN
Reset the modem