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7/29/2019 At Command Summaries
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AT command summaries
AT command summaries.
ticle ID: bit00100
itWare: All Versions
seful AT Commands
T OK if modem is respondingTI3 Modem IDT+FMFR? Returns Chip set ManufacturerT+FCLASS=? Returns the modem class for fax modems.T+P1+F0 Returns "OK" for Classic modems.T+B5+F0 Returns "OK" for send only modemTA Puts modem in answer modeTDT Dialing commandT#CLS=? Returns string including "8" for voice modem for Rockwell chipset or "Error" for non-Rockwice modems.
T#VCL=1 OK if modem is using Cirrus Logic chipsetT$$R2 Returns "OK" if modem supports distinctive ring.T$$R1 Returns "OK" if modem supports distinctive ring.T$$Z1 Returns "OK" if modem supports loop current data.T#CID=1 Returns "OK" if modem has Caller ID.T+FSPL=1 Returns "OK" if modem supports Polling Receive Fax.T#CLS=8 Returns "OK" if modem has Speaker Phone Capability.T#VLS=6 Returns "OK" if modem has Speaker Phone Capability.
ayes standard AT commands:
ommands Use Results
T Attention OK if modem is responding
TZ Software reset
TI3 Return modme ID
T&F Load in Factory settings into Active Profile
TEn n=0 turns the echo offn=1 turns the echo on
TS0=n Modem will answer the phone after n_th ring
TVn n=0 modem returns numeric result coden=1 modem returns verbal result code
T&Wn Write the active profile into stored profile n
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AT command summaries
T&Yn Load in stored profile n at power on.
TA Answer the line
ax Class 1 and Class 2 commands:
ommands Use Results
T+FCLASS=? Find out the class of the modem.0 identifies the data communication capability
0,1: class 1 modem0,2: class 20,1,2: class 1 and 2
T+P1+F0
T#CLS=? Find out if the modem is voice modem will return "8" for voice modem,: ie."0,1,2,8"
TI3
ockwell AT Command Set
/ Reexecute command
Go off-hook and attempt to answer a call
0 Select V.22 connection at 1200bps or 300bps
1 Select Bell 212A connection at 1200bps or 300bps
1 Return OK message
n Dial modifier 0 Turn off command echo
1 Turn on command echo
0 Select auto-detect mode (equivalent to N1)
1 Select V.21 or Bell 103
2 Reserved
3 Select initial V.23 line modulation
4 Select initial V.22 or Bell 212A 1200bps line speed
5 Select initial V.22bis line modulation
6 Select initial V.32bis or V.32 4800 line modulation
7 Select initial V.32bis 7200 line modulation
8 Select initial V.32bis or V.32 9600 line modulation
9 Select initial V.32bis 12000 line modulation
10 Select initial V.32bis 14400 line modulation
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AT command summaries
0 Initiate a hangup sequence
1 If on-hook, go off-hook and enter command mode
0 Report product code
Report precomputed checksum from ROM
2 Compute checksum and report status
3 Report firmware level
4 Report response programmed by an OEM
5 Report the modem country code number
0,L1 Speaker volume low
2 Speaker volume medium
3 Speaker volume high
M0 Turn speaker off
M1 Speaker off after connected
M2 Speaker on
M3 Turn speaker off during dialing and receiving carrier and turn speaker on during answering
0 Handshaking per S37 and Bn and disable auto-detect mode
1 Originate: Handshake per S37 and Bn; fall back
Answer: Negotiate per V.32, V.22bis, V.22 and V.21 and enable auto-detect mode
O0 Go online
O1 Go online and initiate a retrain sequence
Force pulse dialing
Q0 Allow result codes to DTE
Q1 Inhibit result codes to DTE
n Select S register as default
n? Return the value of S register n
Return the value of default S register
Force DTMF dialing
0 Report short form (terse) result codes
1 Report long form (verbose) result codes
W0 Report DTE speed in EC mode
W1 Report line speed, EC protocol and DTE speed
W2 Report DCE speed in EC mode
0 Report only basic call progress result codes, i.e., OK, CONNECT, RING, NO CARRIER(also, for busy, if enabled and dial tone not detected), NO ANSWER and ERROR
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AT command summaries
1 Report only basic call progress result codes and connections speeds, i.e., OK, CONNECTRING, NO CARRIER (also, for busy, if enabled, and dial tone not
detected), NO ANSWER, CONNECT XXXX, and ERROR
2 Report only basic call progress result codes and connections speeds, i.e., OK, CONNECTRING, NO CARRIER (also, for busy, if enabled, and dial tone not detected), NO ANSWERCONNECT XXXX, and ERROR
3 Report only basic call progress result codes and connection rate, i.e., OK, CONNECT, RINNO CARRIER, NO ANSWER, CONNECT XXXX, BUSY, and ERROR
4 Report all call progress result codes and connection rate, i.e., OK, CONNECT, RING, NOCARRIER, NO ANSWER, CONNECT XXXX, BUSY, NO DIAL TONE and ERROR
0 Disable long space disconnected before on-hook
1 Enable long space disconnect before on-hook
0 Restore stored profile 0 after warm reset
1 Restore stored profile 1 after warm reset
A0 Set maximum block size in MNP to 64
A1 Set maximum block size in MNP to 128
A2 Set maximum block size in MNP to 192
A3 Set maximum block size in MNP to 256
Bn Send break of n x 100 ms (n=1 thru 9)
G0 Disable modem-to-modem flow control
G1 Enable modem-to-modem flow control
Kn Controls break handling during three states: When modem receives a break from the DTEK0,2,4 Enter online command mode, no break sent to the remote modem
K1 Clear buffers and send break to remote modem
K3 Send break to remote modem immediately
K5 Send break to remote modem in sequence with transmitted data
When modem receives \B in online command state:
K0,1 Clear buffers and send break to remote modem
K2,3 Send break to remote modem immediatelyK4,5 Send break to remote modem in sequence with transmitted data When modem receives
break from the remote modem:
K0,1 Clear data buffers and send break to DTE
K2,3 Send a break immediately to DTE
K4,5 Send a break with received data to the DTE
L0 Use stream mode for MNP
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AT command summaries
L1 Use block mode for MNP
N0 Select normal speed buffered mode
N2 Select reliable link mode
N3 Select auto reliable mode
N4 Force LAPM mode
N5 Force MNP mode
S Display active configuration of the modem-(Not supported on all modems)
C0 Force RLSD active regardless of the carrier state
C1 Allow RLSD
D0 Interpret DTR ON-to-OFF transition per &Qn, where Qn: &Q0,&Q5, The modem ignores D&Q6&Q1,&Q4 The modem hangs up&Q2,&Q3 The modem hangs up
D1 Interpret DTR ON-to-OFF transition per &Qn, where Qn: &Q0,&Q1, Asynchronous escape&Q4,&Q5&Q6&Q2,&Q3 The modem hangs up
D2 Interpret DTR ON-to-OFF transition per &Qn, where Qn:&Q0 thru The modem hangs up&Q6
D3 Interpret DTR ON-to-OFF transition per &Qn, where Qn:
&Q0,&Q1, The modem performs&Q4, soft reset&Q5,&Q6&Q2,&Q3 The modem hangs up
F0 Recall (restore) factory profile 0
F1 Recall (restore) factory profile 1
G0 Disable guard tone
G1 Disable guard tone
G2 Enable 1800 Hz guard toneJ0 Reset S21 register response to bit 1 only for compatibility
J1 Set S21 register response to bit 1only for compatibility
K0 Disable DTE/DCE flow control
K3 Enble RTS/CTS DTE/DCE flow control
K4 Enable XON/XOFF DTE/ DCE flow control
K5 Support transparent XON/XOFF DTE/DCE flow control
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AT command summaries
K6 Enable RTS/CTS and XON/XOFF DTE/DCE flow control
L0 Returns status of OK
L1 Returns status of OK
M0 Select direct asynchronous mode
M1 Select sync connect with async off-line command mode
M2 Select sync connect with async off-line command mode and enable DTR dialing of directozero
M3 Select sync connect with async off-line command mode and enable DTR to act as T alk/Dswitch
P0 Set 10 pps pulse dial with 39%/61% make/break
P1 Set 10 pps pulse dial with 33%/67% make/break
P2 Set 20 pps pulse dial with 39%/61% make/break
P3 Set 20 pps pulse dial with 33%/67% make/break
Q0 Select direct asynchronous modeQ1 Select sync connect with async off-line command mode and enable DTR dialing of directo
zero
Q2 Select sync connect with async off-line command mode and table DTR dialing of directoryzero
Q3 Select sync connect with async off-line command mode and enable DTR to act as Talk/Daswitch
Q4 Select Hayes autosync mode during answering
Q5 Modem negotiates an error corrected linkQ6 Select asynchronous operation in normal mode
R0 CTS tracks RTS (async) or acts per V.25 (sync)
R1 CTS is always active
S0 DSR is always active
S1 DSR acts per V.25
T0 Terminate any test in progress
T1 Initiate local analog loopbackT2 Returns ERROR result code
T3 Initiate local digital loopback
T4 Allow remote digital loopback
T5 Disallow remote digital loopback request
T6 Request an RDL without self-test
T7 Request an RDL with
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AT command summaries
T8 Initiate local analog loop with self-test
V Display current configurations
W0 Store the active profile in NVRAM profile 0
W1 Store the active profile in NVRAM profile 1
X0 Select internal timing for the transmit clock
X1 Select external timing for the transmit clock
X2 Select slave receive timing for the transmit clock
Y0 Recall stored profile 0 upon power up
Y1 Recall stored profile 1 upon power up
Znx Store dial string x (1 to 40) to location n (0 to 19)
%C0 Disable data compression
%C1 Enable MNP5 data compression
%C2 Enable V.42bis data compression
%C3 Enable both V.42bis and MNP5 compression
%E0 Disable line quality monitor and auto retrain
%E1 Enable line quality monitor and auto retrain
%F1 Select 75Tx/1200Rx when viewdata is selected- (Not Supported on Domestic product)
%F2 Select 1200Tx/75Rx when viewdata is selected- (Not Supported on Domestic product)
%L Return received line signal level
%M0 Returns status of OK
%M1 Returns status of OK
%Q Report the line signal quality
%TT PTT certification test signals
NP 10
M0 Disable MNP 10 link negotiation power adjustment
M1 Enable MNP 10 link negotiation power adjustmentH0 Select MNP 10 link negotiation at highest rate
H1 Select MNP 10 link negotiation at 1200
H2 Select MNP 10 link negotiation at 4800
K0 Disable MNP 10 extended services
K1 Enable MNP 10 extended services
K2 Enable MNP 10 extended services detection only
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AT command summaries
Q0 Disable MNP 10 fallback to 2400bps (V.22bis)/ 1200bps (V.22)
Q1 Enable MNP 10 fallback to 2400 bps (V.22bis)/ 1200bps (V.22)
@M0 Select initial transmit level of -26 dBm
@M1 Select initial transmit level of -30 dBm
@M2 Select initial transmit level of -10 dBm
@M3-@M10 Select initial transmit level of -10 dBm
@M11 Select initial transmit level of -11 dBm
@M12 Select initial transmit level of -12 dBm
@M30 Select initial transmit level of -30 dBm
@M31 Select initial transmit level of -31 dBm
E0 Disable the compromise equalizer
E1 Enable the compromise equalizer
Registers
Register Function Range Units Save Default
0 Rings to Auto-Answer 0-255 Rings 0
1 Ring Counter 0-255 Rings 0
2 Escape Character 0-255 ASCII 43
3 Carriage Return Character 0-127 ASCII 13
4 Line Feed Character 0-127 ASCII 105 Backspace Character 0-255 ASCII 8
6 Wait Time for Dial Tone 2-255 seconds 4
7 Wait for Carrier 1-255 seconds 50
8 Pause Time for (,) Comma 0-255 seconds 2
9 Carrier Detect Response Time 1-255 1/10 second 6
10 Carrier Loss Disconnect Time 1-255 1/10 second 14
11 Touch Tone (DTMF) Duration 50-255 1/1000 second 9512 Escape Code Guard Time 0-255 2/100 second 50
13 Reserved - - - -
14 General Bit Mapped Options - - - 138 (8ah)
15 Reserved - - - -
16 Test Mode Bit Mapped Options (&T) - - - 0
17 Reserved - - - -
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AT command summaries
18 Test Timer 0-255 seconds
19-S20 Resrved - - - -
21 V.24/General Bit Mapped Options - - 4 (04h)
22 Speaker/Results Bit Mapped Options - - 117 (75h)
23 General Bit Mapped Options - - 55 (37h)
24 Sleep Inactivity Timer 0-255 seconds 0
25 Delay to DTR off 0-255 1/100 second 5
26 RTS-to-CTS Delay 0-255 1/100 second 1
27 General Bit Mapped Options - - 73 (49h)
28 General Bit Mapped Options - - 0
29 Flash Dial Modifier Time 0-255 10 ms 0
30 Disconnect Activity Timer 0-255 10 seconds 0
31 General Bit Mapped Options - - 2
32 XON Character 0-255 ASCII 17 (11h)
33 XOFF Character 0-255 ASCII 19 (13h)
34-S35 Reserved - - -
36 LAPM Failure Control - - 7
37 Line Connection Speed - - 0
38 Delay Before Forced Hangup 0-255 seconds 20
39 Flow Control - - 3
40 General Bit Mapped Options - - 105 (69h) No MNP 107 (6Bh) MNP 10
41 General Bit Mapped Options - - 3
42-45 Reserved - - -
46 Data Compression Control - - 138
48 V.42 Negotiation Control - - 7
80 Soft Switch Functions - - 0
82 LAPM Break Control - - 128 (40h)86 Call Failure Reason Code 0-255 - -
91 PSTN Transmit Attenuation Level 0-15 dBm 10
92 Fax Transmit Attenuation Level 0-15 dBm 10
95 Result Code Messages Control - - 0
99 Leased Line Transmit Level 0-15 -dBm 10
201 Cellular Transmit Level 0-63 58
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AT command summaries
202 Remote Access Escape Character 0-255 ASCII 170
The register may be store in the user profiles with the &W command.
esult Codes
hort Form Long Form n Value in ATXn Comman
0 1 2 3 4
OK
CONNECT
RING
NO CARRIER
ERROR
CONNECT 1200 1
NO DIALTONE
BUSY 3 3
NO ANSWER
CONNECT 0600 1
0 CONNECT 2400 1
1 CONNECT 4800 1
2 CONNECT 9600 1
3 CONNECT 7200 1 4 CONNECT 12000 1
5 CONNECT 14400 1
6 CONNECT 19200 1
7 CONNECT 38400 1
8 CONNECT 57600 1
2 CONNECT 1200TX/75RX 1
3 CONNECT 75TX/1200RX 1 4 DELAYED 4 4 4 4
2 BLACKLISTED
0 CARRIER 300
4 CARRIER 1200/75
5 CARRIER 75/1200
6 CARRIER 1200
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AT command summaries
7 CARRIER 2400
8 CARRIER 4800
9 CARRIER 7200
0 CARRIER 9600
1 CARRIER 12000
2 CARRIER 14400
6 COMPRESSION: CLASS 5
7 COMPRESSION: V.42bis
9 COMPRESSION: NONE
6 PROTOCOL: NONE
7 PROTOCOL: LAPM
0 PROTOCOL: ALT
1 PROTOCOL: ALT-CELLULAR
3 FAX
F4 +FCERROR
5 DATA
he " " indicates which Xn command is supported. A numeral indicates which result code will display ace of that message.
Last Modified: 02/01/2000 02:50:23 PM