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 14 – Short Message Service Control Commands
Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide 75
Send Message +CMGS
Description: This command is used to send an SMS message.
The <da> field is the address of the terminal to which the message is sent. To send the text
message, type <ctrl-Z> (0x1A) as the final character of the message. This command can be
aborted using the <ESC> (0x1B) character while entering the message text.
The <length> parameter is optional, it is used to set the length of the text string. When <length>
is specified, the CMGS command will only process the number of bytes specified by <length>
regardless of whether it contains <ctrl-Z>, <ESC>, or <backspace> characters.
The <priority>, <privacy>, <reply option>, and <cbn> parameters are optional. Defaults are used
when not specified.
The +CMGS: <mr> unsolicited message and OK response indicate that the +CMGS command has
been accepted without errors and an attempt to deliver the SMS to the network is being made.
We recommend that +CDS: unsolicited messages are enabled using the AT+CNMI command.
+CDS: indicates that the message has been received by the network and the network is
delivering the SMS or there is an error in attempting to send the SMS. Attempting to send a
second SMS prior to the +CDS: unsolicited message will result in an error.
Syntax: +CMGS=<da> [,<length>] [,<priority>] [,<privacy>] [,<reply>] [,<cbn>] <cr><message text>ctrl-Z
/ESC>
Command
Possible responses
AT+WSCL=1,2
Note: Set language to English, encoding to
ASCII
AT+CMGS=”8585551212”<cr>
Please call me soon, Fred. <ctrl-Z>
Note: Send a message
OK
+CMGS:<mr>
OK
+CDS: <fo>, <mr>, [<ra>] , [<tora>], <scts>,
<dt>, <st>
AT+CMGS=”8585551212”,12<cr>
Please call.
Note: Automatically send message after
receiving 12 bytes.
+CMGS:<mr>
OK
AT+CMGS=”8585551212”,,2,1,1,"5550000
"<cr>
Please call ASAP<ctrl-Z>
Note: Send a message with the specified
priority, privacy, reply option and call back
number. Note omitted length field.
+CMGS:<mr>
OK










