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 3 – General Commands
14 Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide
Provides detailed descriptions of the AT commands supported by CDMA C1 modems. The functionality and
syntax as well as expected result codes and responses are documented for each command.
Attention AT
Description: This two-character command prefix is used to alert the modem software that a command has
been entered for processing. This prefix must be included in all commands unless otherwise
noted. When entered alone, the modem responds with OK to signify it is ready to process
commands.
Syntax: AT
Command
Possible Responses
AT
Note: No response returned.
Repeat Last Command A/
Description: This command repeats the previous command. Only the A/ command itself cannot be repeated.
Note: Not currently supported on Universal IP products.
Syntax: A/
Command
Possible Responses
A/
Response of the previous AT Command
Echo E
Description: This command is used to determine whether or not the modem echoes characters received by
an external application (DTE). This is a standard Hayes
modem AT command.
Syntax: ATE
Command
Possible Responses
ATE0
Note: Characters are not echoed
OK
Note: Done
ATE1
Note: Characters are echoed
OK
Note: Done










