At Command Summaries

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

ttp://www.accpac.com/techsupp/bitware/bit00100.htm (1 of 11)20/03/2004 12:59:28 p.m.


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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





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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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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




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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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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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




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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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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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



@M3-@M10 Select initial transmit level of -10 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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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


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


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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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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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

At Command Summaries

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