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 9 – Call Control Commands
46 Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide
Values: <number> The phone number to which all calls are forwarded.
To receive unsolicited responses, set the AT+WUSLMSK command to enable the responses.
Send Flash to Base Station +WFSH
Description: This command sends a flash or flash with information to the base station. The flash command is
used to manage call waiting and 3-way calls. For call waiting situations when the 3rd party call is
received, send a flash (AT+WFSH) to toggle between the two different call parties. The +WFSH
unsolicited AT command will be returned if a flash was sent to the base station over the air.
Note that on CDMA networks, this does not guarantee that an actual switch between calls took
place, because there is no acknowledgement to the modem.
For 3-way calls, initiate the first call to party # 1 (see ATD). Then send a flash with information
(AT+WFSH=18005551212) to initiate a call to party # 2; party # 1 will automatically be placed on
hold. The “information” is the phone number of party # 2. Once a conversation with party # 2 is
established, send a regular flash (AT+WFSH) to connect all 3 parties. Send another flash
(AT+WFSH) to disconnect party # 2, or End call (see ATH) to end the call with all parties.
Syntax: AT+WFSH
AT+WFSH= < phone_number > (for a flash with information)
Unsolicited
result Syntax: +WFSH (confirms a flash was sent to the base station)
Command
Possible Responses
ATD8585551212;
Note: Make a voice call
AT+WFSH
Note: Send a flash to the Base Station (toggle to
the second call).
Note: Conversation with second call.
AT+WFSH
Note: Send a flash to the Base Station (toggle to
the first call).
ATH
Note: Release all calls
OK
+WORG:8585551212
+WCNT:3 Note: Conversation…
+CCWA:”8582701234”,129
Note: Indication of another incoming call
OK
+WFSH
Note: Flash sent to the Base Station. Call
to the second call. However, this is not
100% guaranteed because there is no
confirmation from the Base Station.
OK
+WFSH
Note: Flash sent to the Base Station. Call
switches to the first call. However, this is
not 100% guaranteed because there is no
confirmation from the Base Station.
OK
+WEND: 29
Note: All Calls End