Multitech CDMA User's Guide Page 181
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AUDIO COMMANDS
181 AT Commands for EV-DO-EV3 Modems
RM Interface Setting +CRM
Set command changes the RM interface protocol.
Read command returns the RM interface setting, in the following format:
+CRM: <value>
Test command reports the <value> parameter range.
Syntax
Command Command type
AT+CRM=<value> Set
AT+CRM? Read
AT+CRM=? Test
Parameters and Values
<value> RM Interface protocol.
0 Circuit data.
1 Packet data (relay layer packet data).
2 Packet data (network layer packet data).
Notes
When the AT$QCMIP value is changed to “1” or “2”, it changes the value of AT+CRM to 2. When AT+CRM
has a value of “2”, it enables network mode operation.
Changing the value of AT$QCMIP to “0” will reset the AT+CRM to its original value.
Example
AT+CRM=?
+CRM: (0-2)
OK
AT+CRM?
+CRM: 2
OK
AT+CRM=0
ERROR
AT$QCMIP?
$QCMIP: 2
OK
AT$QCMIP=0
OK
AT+CRM=0
OK
AT+CRM?
- EV-DO and CDMA 1
- Contents 3
- CONTENTS 18
- Introduction 19
- String Type Parameters 20
- Command Lines 20
- Command Response Timeout 22
- Command Issuing Timing 23
- Command Line Prefixes 26
- Hardware Revision #HWREV 28
- V.250 AT Commands 29
- Model Identification +GMM 32
- Capabilities List +GCAP 32
- Serial Number +GSN 33
- DTE Modem Interface Control 35
- Quiet Result Codes Q 36
- Response Format V 36
- Extended Result Codes X 37
- Flow Control &K 39
- Standard Flow Control \Q 39
- Ring (RI) Control \R 40
- Call Control 43
- Return to on-line mode O 44
- Answer A 44
- Compression Control 45
- S Parameters 45
- Ring Counter S1 46
- Escape Character S2 47
- Escape Prompt Delay S12 49
- Delay to DTR Off S25 49
- Error Control 50
- V.250 AT COMMANDS 51
- Reference: V.25ter 51
- 3GPP TS 27.007 AT Commands 52
- Multiplexing Mode +CMUX 54
- Network Service Handling 57
- Call Waiting +CCWA 60
- List Current Calls +CLCC 61
- Mobile Equipment Control 62
- Set Phone Functions +CFUN 63
- Signal Quality +CSQ 64
- Clock Management +CCLK 69
- Alarm Management +CALA 70
- Delete Alarm +CALD 72
- Alert Sound Mode +CALM 72
- Ringer Sound Level +CRSL 73
- Mobile Equipment Errors 74
- Voice Control 75
- Tone Duration +VTD 76
- General Configuration 77
- Message Format +CMGF 79
- Message Configuration 80
- Save Settings +CSAS 82
- Restore Settings +CRES 83
- List Messages +CMGL 86
- Read Message +CMGR 88
- PDU Mode 89
- Message Sending And Writing 91
- Notes PDU Mode 92
- Example PDU Mode 92
- Notes Text Mode 95
- Example Text Mode 96
- Delete Message +CMGD 97
- Custom AT Commands 99
- Software Shut Down #SHDN 101
- Extended Reset #Z 101
- Wake from Alarm Mode #WAKE 102
- Parameters and Values 103
- CUSTOM AT COMMANDS 104
- Example 106
- ATD Dialing Mode #DIALMODE 114
- Automatic Call #ACAL 114
- SMS Overflow #SMOV 117
- Audio Codec #CODEC 118
- Network Timezone #NITZ 118
- RTC Status #RTCSTAT 120
- Show Address #CGPADDR 121
- Cell Monitor #MONI 122
- Multisocket AT Commands 124
- Socket Info #SI 125
- Context Activation #SGACT 126
- Socket Shutdown #SH 127
- Socket Configuration #SCFG 128
- Socket Dial #SD 131
- Socket Restore #SO 132
- Socket Listen #SL 133
- Socket Listen UDP #SLUDP 134
- Socket Accept #SA 135
- Single Socket AT Commands 139
- FTP AT Commands 140
- FTP Close #FTPCLOSE 141
- FTP Put #FTPPUT 141
- FTP Get #FTPGET 141
- FTP Type #FTPTYPE 142
- FTP Read Message #FTPMSG 142
- FTP Delete #FTPDELE 143
- FTP List #FTPLIST 144
- Query DNS #QDNS 145
- Manual DNS Selection #DNS 146
- Firewall Setup #FRWL 148
- Data Volume #GDATAVOL 149
- ICMP Ping Support #ICMP 150
- PING Request #PING 150
- TCP Reassembly #TCPREASS 152
- E-mail SMTP Server #ESMTP 153
- E-mail Sending #EMAILD 157
- ENHANCED IP STACK AT COMMANDS 159
- GPS AT Commands Set 160
- GPS Reset $GPSR 161
- Command Command type 163
- AT$GPSACP Execute 163
- AT$GPSACP? Read 163
- AT$GPSACP=? Test 163
- Save GPS Parameters $GPSSAV 165
- Clear GPS Data $GPSCLRX 166
- GPS Lock Mode $GPSLOCK 166
- CDMA Custom AT Commands 168
- Syntax 170
- Modem NAM Parameters #ENG 171
- CDMA Notification #NOTI 173
- Mobile Station ID $MSID 176
- Service Status #SVCSTAT 177
- RM Interface Setting +CRM 181
- Data Session AT Commands 182
- Packet Zone ID +PZID 183
- Test Origination #TESTORI 184
- EVDO Specific AT Commands 185
- COMMANDS 186
- AUDIO COMMANDS 187
- Audio Commands 188
- Select Ringer Sound #SRS 189
- Select Ringer Path #SRP 190
- Tones Configuration 191
- Tone Classes Volume #TSVOL 192
- Headset Sidetone #SHFSD 196
- Handset Sidetone #SHSSD 197
- Audio Profiles 199
- Echo Canceller Configuration 203
- Digital Voice Interface 205
- Miscellaneous Audio Commands 205
- Examples 209
- RX AGC Enable #SRXAGC 211
- Verizon Specific AT Commands 214
- NAM Lock #NAMLOCK 217
- Read Message +VCMGR 217
- List Message +VCMGL 219
- Set Payload Length #SMSPSIZ 222
- Preferred Roaming List $PRL 224
- Reset $RESET 224
- Example 225
- Clear MRU Table #CLRMRU 226
- Mobile IP Commands 229
- Home Address $QCMIPHA 232
- Medium Data Rate $QCMDR 243
- AT Parser Abort 245
- CME Error List 246
- CMS Error List 247
- CMS ERROR LIST 248
- Acronyms 249
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