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Chapter 15 – Audio Commands

94 Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide

Audio Loopback &T

Description: This command is used to perform audio loop back of the current audio path. This command can

be used to validate the audio loop. This is a standard Hayes



modem AT command.

Syntax: AT&T<num>

Command

Possible Responses

AT&T0

Note: Audio loopback is

off.

AT&T1

Note: Audio loopback is on.

Values: <num>

0 Audio loopback of off.

1 Audio loopback for PCM interface is enabled.

2 Audio loopback for DSP interface is enabled.

3 Audio loopback for Remote End is enabled.

1 2 ... 89 90 91 92 93 94 95 96 97 98 99 ... 128 129

CDMA-C1 AT Commands 1
Copyright 2
Trademarks 2
Revisions 2
Contacting Multi-Tech 2
Contents 3
Contents 4
Document Scope 9
Related References 9
Serial Interface Settings 10
Overview 10
Terminology 11
Command Format and Syntax 11
Command-Line Editing 12
Input Command Syntax 12
Other Syntax 12
Output Response Syntax 12
Parameter Defaults 13
Unsolicited Message Syntax 13
Attention AT 14
Repeat Last Command A/ 14
Echo E 14
+WUSLMSK 15
Syntax: AT+WPRI? 16
Hardware Version +WHWV 17
Capabilities List +GCAP 19
Subscriber Number +CNUM 19
Save Configuration &W 21
General Indicator +WIND 22
Result 23
Examples: +WIND: 4 23
Error Codes: 24
Chapter 7 – Status Commands 25
Fixed DTE Rate +IPR 28
Set DCD Signal &C 29
Set DTR Signal &D 29
Set DSR Signal &S 30
Syntax: AT+DR=<val> 31
Syntax: AT+WCHD 31
Automatic Answer S0 32
Command Edit Character S5 33
Dial Command D 35
Hang-Up Command H 36
Answer a Call A 36
Syntax: ATA 37
Incoming Call +RING 38
Emergency Mode +WSOS 40
Call Answered +WANS 41
Call Connected +WCNT 41
Call Ended +WEND 42
Call Originated +WORG 43
CPHS Command +CPHS 43
Values: <LineId> 44
Examples: 44
Call Forwarding +CCFC 45
Syntax: AT+WFSH 46
Unsolicited 46
Send DTMF Tones +VTS 47
Serving System +CSS 49
Signal Quality +CSQ 50
Band Preference +WBND 53
Service Indication +WSRV 53
Roam Preference +WRMP 54
Default Cell Band +WDCB 55
Roaming Indication +WROM 55
Values: <indicator> 56
Values: <mode> 58
Excess SPC Failures +WLCK 60
Commit Changes +WCMT 61
Set IMSI +WIMI 62
SID and NID +WSID 63
Commit Successful +WOTC 66
SPL Unlocked +WOTS 66
NAM Download OK +WOTN 66
MDM Download OK +WOTM 67
IMSI Download OK +WOTI 67
PRL Download OK +WOTP 67
Values: <Mode> 74
Parameter 74
Send Message +CMGS 75
Read Message +CMGR 76
List Message +CMGL 77
Delete Message +CMGD 79
Syntax: +WMGF 84
Audio Subsystem Overview 85
Chapter 15 – Audio Commands 86
Microphone Gain +VGT 87
Speaker Gain Control +VGR 88
Values: <Gain> 89
Digital Gain Receive +WDGR 90
Values: <val1> 91
Echo Cancellation +ECHO 92
Audio Loopback &T 94
Quick Net Connect $QCQNC 95
R-SCH Selection $QCMIP 96
MIP Selection $QCMIPP 96
Chapter 16 – Data Commands 97
Configure TCP/IP +WIPCFG 99
Values: <cmdtype> 101
Bearer Status +WIPBR 102
Values: <protocol> 103
Response 105
Syntax: AT+WIPERR? 105
Values: 107
Options and 107
32kHz Sleep Mode +W32K 110
Chapter 18 – Sleep Commands 111
Syntax: +WNETTIMEGET? 112
Response Field 112
Description: 112
Introduction 113
Acquiring Cellular Service 113
Call Processing 114
Sending Binary Data 115
TCP Socket Examples 116
TCP Client Socket Connection 117
TCP Server Example 117

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