Specifications
Table Of Contents
- Chapter 1 – Introduction
- Chapter 2 – AT Commands Overview
- Chapter 3 - General Commands
- Chapter 4 – Identification Commands
- Chapter 5 – Query Commands
- Chapter 6 – Global Configuration Commands
- Chapter 7 – Status Commands
- Chapter 8 – Communication Commands
- Fixed DTE Rate +IPR
- DTE-DCE Local Flow Control +IFC
- Set DCD Signal &C
- Set DTR Signal &D
- Set DSR Signal &S
- V.42bis Data Compression +DS
- V.42bis Data Compression Report +DR
- Hang-Up 1x Data Command +WCHD
- Automatic Answer S0
- Line Termination Character S3
- Response Formatting Character S4
- Command Edit Character S5
- Connection Completion Timeout S7
- Carrier Detect Threshold S9
- Automatic Disconnect Delay S10
- DTMF Duration and Spacing S11
- Chapter 9 – Call Control Commands
- Dial Command D
- Hang-Up Command H
- Answer a Call A
- Calling Line Identification Presentation +CLIP
- Call Waiting Indication +CCWA
- Incoming Call +RING
- Set Voice Privacy Level +WPRV
- Emergency Mode +WSOS
- Call Answered +WANS
- Call Connected +WCNT
- Call Ended +WEND
- Call Originated +WORG
- CPHS Command +CPHS
- Voice Mail Indicator +WVMI
- List Current Call State +CLCC
- Call Forwarding +CCFC
- Send Flash to Base Station +WFSH
- Send DTMF Tones +VTS
- Chapter 10 – Network Service Commands
- Serving System +CSS
- Set Rm Interface Protocol +CRM
- Signal Quality +CSQ
- Network Registration & Roaming +CREG
- Set More Preferred Rescans +WTBMPRS
- Band Preference +WBND
- Service Indication +WSRV
- Roam Preference +WRMP
- Default Cell Band +WDCB
- Roaming Indication +WROM
- Enhanced Roaming Indication +WERI
- Cell Environment and RxLev Indication +CCED
- Chapter 11 – Provisioning Control Commands
- Chapter 12 – OTASP / OTAPA Indications
- Chapter 13 – OMA / DM Control Commands
- Chapter 14 – Short Message Service Control Commands
- Send Message +CMGS
- Read Message +CMGR
- List Message +CMGL
- Delete Message +CMGD
- Preferred Message Storage +CPMS
- Set SMS Compose Language and Encoding +WSCL
- New Message Indication +CNMI
- Incoming Message Directly Displayed +CMT
- Incoming Message Stored in Memory +CMTI
- SMS Status Report Indication Directly Displayed +CDS
- SMS Message Storage Full +WMGF
- Chapter 15 – Audio Commands
- Audio Subsystem Overview
- Speaker & Microphone Selection +SPEAKER
- Microphone Gain Enable +MGE
- Microphone Gain +VGT
- Speaker Gain Control +VGR
- Digital Gain Transmit +WDGT
- Digital Gain Receive +WDGR
- Side Tone Modification +SIDET
- Echo Cancellation +ECHO
- Loudspeaker Volume Level +CLVL
- Initialize Voice Parameters +VIP
- Audio Loopback &T
- Chapter 16 – Data Commands
- Chapter 17 – TCP App AT Commands (For Non-UIP Builds)
- Configure TCP/IP +WIPCFG
- Bearer Configuration +WIPBR
- Bearer Status +WIPBR
- Service Creation +WIPCREATE
- Service Status Unsolicited Response 1 +WIPREADY
- Service Status Unsolicited Response 2 +WIPACCEPT
- Service Status Unsolicited Response 3 +WIPERROR
- Last Socket Error Query +WIPERR
- Socket Data Exchange +WIPDATA
- TCP/IP Service Option Handling +WIPOPT
- Closing a Service +WIPCLOSE
- Close Service Status +WIPPEERCLOSE
- Enable Relay Mode for SIP Dial-Up +WRLY
- Chapter 18 – Sleep Commands (Not for UIP)
- Chapter 19 – Host Application Scenarios
- Chapter 20 – Effects of AT&W, ATZ, and AT&F
- Chapter 21 – CDMA Terminology and Acronyms
- Index
Chapter 10 – Network Service Commands
54 Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide
Roam Preference +WRMP
Description: The CMDA modem Roam Preference informs the MS whether it is allowed to roam on foreign
CDMA networks or if it is only allowed to operate on home networks. Foreign and home
network determination is programmed into the PRL.
This command enables or disables the mobile station’s ability to roam, based on the PRL
configuration. If the mobile station accepts setting the MS, the value will be written to NVRAM
and will persist after a power-cycle. After execution of the +WRMP command, the mobile
station may change roaming states. The unsolicited result +WROM: <mode> will indicate the
new state.
This command may be used in conjunction with the Auto-A, Auto-B feature (Auto A/B feature is
a Verizon specific feature). If the roaming preference is set to 2 and the Auto-A, Auto-B feature
flag is enabled the modem will perform Auto-A, Auto-B system selection.
Notes: Command may not be available in all software variations due to carrier requirements.
For Sprint ONLY, roaming on affliated networks options is not allowed..
Syntax: AT+WRMP=<mode>,<persist>
Command
Possible Responses
AT+WRMP?
Note: Ask for current Mode
Preference
+WRMP: 0
OK
Note: Home only
AT+WRMP=?
+WRMP: (0-2),)0-1)
OK
Note: Home, Affiliated, Any
AT+WRMP=0
Note: Allow Home only networks
OK
+WROM: 0
Note: Unsolicited +WROM may or may not appear
based on current circumstances
AT+WRMP=1
Note: Allow Roaming Affiliated
Networks
OK
+WROM: 1
Note: Unsolicited +WROM may or may not appear
based on current circumstances
AT+WRMP=2
Note: Allow Roaming on Any
Network
OK
+WRMP: 2
Note: Unsolicited +WROM may or may not appear
based on current circumstances
Values: The parameter values are the following ones:
<mode>
0 Home Networks only, as defined in the PRL (default value)
1 Roaming on Affiliated networks, as defined in the PRL
2 Roaming on Any Network, as defined in the PRL.
<persist>
0 Do not save to NV
1 Save to NV (default)
Check AT+WUSLMSK settings if response is masked.