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Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273F) 52
Index
3
32-bit Frame Check Sequence – +EFCS.................21
A
Analog Source/Destination Selection – +VLS ..........32
Answer – A.................................................................5
AT Commands
#CBNn – Store Callback Number.........................19
#CBPn – Store Callback Password......................19
#DBn – Callback Enable/Disable..........................19
$Cn – Key Abort...................................................15
$Dn – DTR Dialing................................................15
$SBn – Serial Port Baud Rate..............................15
%Cn – Data Compression Control........................11
%En – Line Quality Monitor..................................12
%L – Line Signal Level.........................................12
%Q – Line Signal Quality......................................12
%U – PCM Code Selection ..................................12
&Cn – Data Carrier Detect (DCD) Control..............8
&Dn – Data Terminal Ready (DTR) Control............8
&En – Modem-Initiated Flow Control......................9
&En – V.42 Error Correction Modes .......................8
&En – V.42bis Data Compression..........................9
&Fn – Load Factory Settings..................................9
&Gn – V.22bis Guard Tone Control........................9
&Kn – Flow Control Selection.................................9
&Mn – Communications Mode................................9
&Pn – Make/Break Dial Ratio...............................10
&Qn – Sync/Async Mode......................................10
&Rn – Clear to Send (CTS) Control......................10
&Sn – Data Set Ready (DSR) Control..................10
&Tn – Local Analog Loopback Test......................10
&Tn – V.54 Test Command..................................27
&Vn – Display Current Configuration and Statistics
for Last Connection...........................................10
&Wn – Store Current Configuration......................11
&Xn – Synchronous Clock Source........................11
&Yn – Select Profile for Hard Reset .....................11
&Z3 – Leased-Line Dial Back-up Number Storage
..........................................................................11
&Zn – Store Telephone Number...........................11
** – Flash Memory Download...............................15
*B – View Numbers in Blacklist.............................15
*D – View Delayed Numbers................................15
*E – Escape Remote Configuration......................16
+++ – Escape Sequence ......................................16
+A8E – V.8 and V.8bis Operation Controls ..........40
+A8I – CI Signal Indication ...................................40
+DR – Data Compression Reporting....................20
+DS – Data Compression.....................................20
+DS44 – V.44 Compression Select......................20
+EB – Break Handling in Error Control Operation 21
+EFCS – 32-bit Frame Check Sequence .............21
+ER – Error Control Reporting .............................21
+ESR – Selective Reject ......................................22
+ETBM – Call Termination Buffer Management...22
+FCLASS= – Display Current Fax Class..............13
+FCLASS=8 – Select Voice Mode........................28
+FLO – Flow Control ............................................29
+GCI – Country/Region of Installation..................14
+IFC – DTE-Modem Local Flow Control...............23
+ILRR – DTE-Modem Local Rate Reporting ........23
+IPR – Fixed DTE Rate........................................24
+MR – Modulation Reporting Control ...................24
+MS= – Modulation Selection...............................14
+PCW=n – Call Waiting Enable............................17
+PIG=n – PCM Upstream Ignore..........................17
+PQC=n – Quick Connect Control........................17
+PSS – Use Short Sequence ...............................17
+VCID=n – Caller ID Selection.............................19
+VDR – Distinctive Ring .......................................35
+VDT – Control Tone Cadence Reporting............35
+VGM – Microphone Gain....................................37
+VGR – Voice Gain Receive (Record Gain).........31
+VGS – Speaker Gain..........................................37
+VGT – Voice Gain Transmit (Playback Volume).31
+VIP – Voice Initialize All Parameters ..................30
+VIT – Voice Inactivity Timer (DTE/Modem) ........32
+VLS – Analog Source/Destination Selection.......32
+VNH – Automatic Hang-up Control.....................29
+VPR – Select DTE/Modem Interface Rate (Turn
Off Autobaud)....................................................36
+VRA – Ringback Goes Away Timer....................33
+VRID= – Caller ID Report Retrieved...................19
+VRN – Ringback Never Appeared Timer............34
+VRX – Start Modem Receive..............................30
+VSD – Silence Detection (Quiet and Silence).....34
+VSM – Compression Method Selection..............34
+VSP – Speakerphone ON/OFF ..........................37
+VTD – Beep Tone Duration Timer......................35
+VTS – Send Voice Tone(s).................................30
+VTX – Start Modem Transmit (Playback) ...........31
A – Answer code ....................................................5
A/ – Repeat Last Command ...................................5
\An – Maximum MNP Block Size..........................12
AT – Attention code................................................5
Bn – Communication Standard Setting...................5
\Bn – Transmit Break............................................12
CIC – Connect Incoming Call ...............................41
CRIs – Call Request Identification........................41
CRNs – Call Request Number..............................41
CRSx – Call Request Address..............................41
DIC – Disregard Incoming Call.............................41
Ds – Dial.................................................................5
DS=n – Dial Stored Telephone Number .................6
En – Echo Command Mode Characters.................6
Hn – Hook Control..................................................6
In – Information Request ........................................6
\Kn – Break Control ..............................................13
-Kn – MNP Extended Services.............................15
L5 – Lists Current Operating Parameters...............6
Mn – Monitor Speaker Mode ..................................6
\Nn – Error Correction Mode Selection.................13
On
– Return Online to Data Mode..........................6