| AT |
Options / Details |
Chipset / Protocol |
| +++ |
Escape Code |
All |
| A/ |
Repeat Last Command |
All |
| A> |
Continuously Repeat Command |
USR |
| AT |
Command Mode Prefix |
All |
| AT#CID=n |
n=0 Disable caller ID
n=1 Enable caller ID in readable format
n=2 Enable caller ID in HEX format |
Must have feature #142. Type ATi10 |
| AT$ |
HELP, Command Summary |
USR |
| AT%Cn |
n=0 Data compression disable
n=1 MNP5 enable
n=2 V.42 enable
n=3 V.42bis and MNP5 |
V.34, Rockwell, Compression selection |
| AT%En |
n=0 Do not request retrain
n=1 Enable monitoring and retraining
if line is bad
n=2 Enable monitoring and retraining
if line is bad, wait one minute
before renogotiating higher speed |
V.32 retraining |
| AT%Fn |
n=1 Select 75Tx/1200Rx
n=2 Select 100Tx/75Rx
n=3 Select V.23 half-duplex |
Optional feature #121. Data echo options |
| AT%Gn |
n=0 Disable V.32bis rate negotiation
n=1 Enable V.32bis rate negotiation |
V.32 Initiation of rate renegotiation |
| AT%L |
Report received signal level
009=-9 dBm (or more)
010=-10 dBm etc.
043=-43 dBm (or less) |
Rockwell. Returns value representing signal level in -dBm. The smaller the number, the better the connection. |
| AT%Q |
Report line signal quality
Range of 0-128 |
Rockwell. Lower the number, better the line. Reading is instantanteous, repeat serveral times for acurate reading. |
| AT&$ |
HELP, Ampersand Commands |
USR |
| AT&An |
n=0 Disable /ARQ Result Codes
n=1 Enable /ARQ Result Codes
n=2 Enable /Modulation Codes
n=3 Enable /Extra Result Codes |
Result codes-All |
| AT&Bn |
n=0 Floating DTE Speed
n=1 Fixed DTE Speed
n=2 DTE Speed Fixed When ARQ |
DTE speed variables |
| AT&Cn |
n=0 DCD Always On
n=1 Modem Controls DCD |
Data Carrier Detect |
| AT&Dn |
n=0 Ignore DTR
n=1 On-Line Command Mode
n=2 DTE Controls DTR
n=3 Reset modem (ATZ) |
Select modem reaction to DTR. Works with &Q command |
| AT&Fn |
n=0 Load Factory 0, no FC
n=1 Load Factory 1, HW FC
n=2 Load Factory 2, SW FC |
Load Factory Default |
| AT&Gn |
n=0 No Guard Tone
n=1 550 Hz Guard Tone
n=2 1800 Hz Guard Tone |
Guard Tone |
| AT&Hn |
n=0 Disable TX Flow Control
n=1 CTS
n=2 Xon/Xoff
n=3 CTS and Xon/Xoff |
USR, serial port flow control |
| AT&In |
n=0 Disable RX Flow Control
n=1 Xon/Xoff
n=2 Xon/Xoff Chars Filtered
n=3 HP Enq/Ack Host Mode
n=4 HP Enq/Ack Terminal Mode
n=5 Xon/Xoff for non-ARQ Mode |
USR, serial port flow control |
| AT&Kn |
n=0 Disable Data Compression
n=1 Auto Data Compression
n=2 Enable Data Compression
n=3 Selective Data Compression |
USR, data compression control |
| AT&Kn |
n=0 Disable flow control
n=3 Enable bi-directional hardware
(RTS/CTS) flow control
n=4 Enable software (XON/XOFF)
n=5 Enable trnasparent flow control
n=6 Enable both hardware and software
flow control |
Rockwell, serial port flow control |
| AT&Mn |
n=0 Normal Mode
n=4 ARQ/Normal Mode
n=5 ARQ Mode |
USR Asynchronous/Synchnous mode |
| AT&Nn |
n=0 Highest Link Speed
n=1 300 bps
n=2 1200 bps
n=3 2400 bps
n=4 4800 bps
n=5 7200 bps
n=6 9600 bps
n=7 12000 bps
n=8 14400 bps
n=9 16800 bps
n=10 19200 bps
n=11 21600 bps
n=12 24000 bps
n=13 26400 bps
n=14 28800 bps
n=15 31200 bps
n=16 33600 bps |
USR |
| AT&Pn |
n=0 N.American Pulse Dial
n=1 UK Pulse Dial |
USR pulse dial selection |
| AT&Pn |
n=0 N.American Pulse Dial
(39%/61% and 10PPS)
n=1 UK/Hong Kong Pulse Dial
(33%/67% and 10PPS)
n=2 39%/61% and 20PPS
n=3 33%/67% and 20 PPS (Japan) |
Rockwell make/break ratio for pulse dial |
| AT&Q |
n=1 Synch mode 1
n=2 Synch mode 2, dial stored number
when DTR makes transition
n=3 Synch mode 3, manual dialing
n=4 Reserved
n=5 Reliable Asynch mode
n=6 Normal Asynch mode |
Rockwell asynch/synch mode
Same as &M, depending on &F |
| AT&Rn |
n=1 Ignore RTS
n=2 RX to DTE/RTS high |
USR |
| AT&Sn |
n=0 DSR Always On
n=1 Modem Controls DSR |
USR |
| AT&Tn |
n=0 End Test
n=1 Analog Loopback (ALB)
n=3 Digital Loopback (DLB)
n=4 Grant Remote DLB
n=5 Deny Remote DLB
n=6 Remote Digital Loopback
n=7 Remote DLB With Self Test
n=8 ALB With Self Test |
USR |
| AT&Un |
n=0 Variable link rate floor.
n=1 Minimum link rate 300 bps
n=2 Minimum link rate 1200 bps
n=3 Minimum link rate 2400 bps
n=4 Minimum link rate 4800 bps
n=5 Minimum link rate 7200 bps
n=6 Minimum link rate 9600 bps
n=7 Minimum link rate 12000 bps
n=8 Minimum link rate 14400 bps
n=9 Minimum link rate 16800 bps
n=10 Minimum link rate 19200 bps
n=11 Minimum link rate 21600 bps
n=12 Minimum link rate 24000 bps
n=13 Minimum link rate 26400 bps
n=14 Minimum link rate 28800 bps
n=15 Minimum link rate 31200 bps
n=16 Minimum link rate 33600 bps |
USR |
| AT&V |
Display configuration information |
Rockwell |
| AT&Wn |
n=0 Store Configuration 0
n=1 Store Configuration 1 |
All |
| AT&Yn |
n=0 Destructive
n=1 Destructive/Expedited
n=2 Nondest./Expedited
n=3 Nondest./Unexpedited |
All |
| AT&Zn=s |
Store Phone Number |
All |
| AT&Zn? |
Query Phone Number |
�
|
| AT)Mn |
n=0 Adust transmit level if remote is set
to )M1, otherwise -10 dBm
n=1 Will try to adust power leve to less
than -10 dBm with MNP 10 |
Optional feature #144. Transmit level adjustment for cellular connection. |
| AT*B |
Display blacklisted numbers as defined by country requirements. |
optional feature #123. Used by countries that have permanently forbidden numbers. |
| AT*C |
Set configuration password |
Optional feature #124 |
| AT*E |
Exit secure access remote configuration |
Optional feature #124 |
| AT*Hn |
n=1 Negotiate at highest supported speed
n=2 Negotiate link at 1200bps
n=3 Negotiate link at 4800bps |
Link Negotiation Rate |
| AT*L |
List callback security passwords |
Optional feature #124 |
| AT*NC? |
Display country specific configurations |
Optional feature #120 |
| AT*NCn |
n=ID of specific country |
Optional feature #120 |
| AT*Pn:word: |
n=0-19 passwords and tel. numbers |
Optional feature #124 |
| AT*R |
Activate remote configuration mode. |
Optional feature #124, works with *C |
| AT*R |
Request secure access mode |
Optional feature #124 |
| AT+FAA=n |
n=2 Activate silent answer for class 2 fax
n=4 Activate silent answer plus for class
2 fax |
�
|
| AT+FAE=n |
n=1 Activate Adaptive Answer
n=3 Activate silent answer for class 1 fax |
�
|
| AT+MS |
Modulation control
,,, |
V.34 only |
| AT+MS= |
n=0 Automode Disabled
n=1 Automode enable using V.8 or
V.32bis Annex A |
V.34 only. Automode does not work with Bell 212 |
| AT+MS= |
28800,26400 etc. default for V.34 is 28800 |
V.34 only |
| AT+MS= |
300,1200,2400 etc. default for V.34 is 300bps |
V.34 only |
| AT+MS= |
n=0 V.21, 300bps
n=1 V.22, 1200bps
n=2 V.22bis, 1200/2400
n=3 V.23 bisynch 75/1200
n=9 V.32, 4800/9600
n=10 V.32bis, 4800/7200/9600/12000/
14400
n=11 V.34, 2400/4800/7200/9600/
12000/14400/16800/
19200/24000/26400/
28800
n=64 Bell 103, 300bps
n=69 Bell 212, 1200bps
n=74 V.FC, 14400/16800/
19200/24000/26400/
28800 |
V.34 only |
| AT+MS? |
Reports MS options |
V.34 only |
| AT-B |
Forced fallback to 1200 |
Optional feature #143 |
| AT-Cn |
n=0 MNP 10 enabled, sync mode
n=1 MNP 10 enabled, asynch mode
n=2 MNP 2 enabled
n=3 MNP 3 enabled |
Optional feature #143 |
| AT-Kn |
n=0 Do not convert LAPM to MNP
n=1 Convert LAPM connection to
MNP 10
n=3 Enable MNP 10 extended services
detection |
Optional feature #143 |
| AT-Qn |
n=0 Enable fallback to V.22/V.22bis
n=1 Disable fallback |
Optional feature #143 |
| AT-Un |
n=0 Allow attenuation to -10 dBm
n=1 Allow attenuation to -18 dBm
n=2 Allow attenuation to -22 dBm
n=3 Allow attenuation to -25 dBm
n=4 Force 2400 bps transmit level to
-10 dBm
n=5 Force 2400 bps transmit level to
-18 dBm
n=6 Force 2400 bps transmit level to
-22 dBm
n=7 Force 2400 bps transmit level to
-25 dBm |
Optional feature #143. Forced transmit level change during fall forward |
| ATA |
�
|
Hayes – Answer Phone Line |
| ATBn |
n=0 V32/CCITT 1200b[s
n=1 Bell Standard 212A 1200bps
n=2 V.23 originate: T75/R1200 when
DTE speed is 1200 bit/second.
V.23 answer: T75/R1200 when
DTE speed is 1200 bit/second.
n=3 – V.23 originate: T1200/R75 when DTE speed is 1200bps.
V.23 answer: T1200/R75 when
DTE speed is 1200BPS.
n=6 V.26 bis when line speed is 1200bps
n=15 V.21 when line speed is 300bps
n=16 Industry Standard 103 when speed
is 300 bps.
n=30 V.22 bis when speed is 2400bps
n=32 V.26 bis when speed is 2400bps
n=41 V.32 when line speed is 4800bps
n=52 V.32 bis when speed is 7200bps
n=60 V.32 when speed is 9600bps
n=64 V.FC when speed is 9600bps
n=70 V.32 bis when handshake begins
at 12000 bps.
n=71 V.FC when handshake begins at 12000 bit/second.
n=75 – V.32 bis when handshake begins at 14400 bit/second.
n=76 – V.FC when handshake begins at 14400 bit/second.
n=81 – V.FC when handshake begins at 16800-28800 bit/second. |
Hayes – Communications options |
| ATD$ |
HELP, Dial Commands |
USR |
| ATDL |
Dial Last Phone Number |
USR/Rockwell |
| ATDn |
Dial a Telephone Number
n=0..9#*TPR,;W@!()- |
All |
| ATDSn |
Dial Stored Phone Number |
USR/Rockwell |
| ATEn |
n=0 No Command Echo
n=1 Echo Command Chars |
All |
| ATFn |
n=0 Online Echo
n=1 No Online Echo |
USR |
| ATFn |
n=0 Best possible auto-detect, same as
ATN1
n=1 V.21 or Bell 102 300bps
n=3 V.23
n=4 V.22 or Bell 212A 1200bps
n=5 V.22bis 2400bps
n=6 V.32bis or V.32 4800bps
n=7 V.32bis 7200bps
n=8 V.32bis or V.32 9600bps
n=9 V.32bis 12,000bps
n=10 V.32bis 14,400bps
n=13 V.FC 14,400
n=14 V.FC 16,800
n=15 V.FC 19,200
n=16 V.FC 21,600
n=17 V.FC 24,000
n=18 V.FC 26,400
n=19 V.FC 28,800 |
Rockwell, only used by V.FC modems
Clears register S31 bit 1. F13 and F19 reccommend connection rate. |
| ATHn |
n=0 On Hook (Hang Up)
n=1 Off Hook |
�
|
| Ati10 results |
Optional Features:
101=Class 1 fax
104=Class 2 fax (TR29.2)
105=Class 2.0 fax (ITU-TSS)
115=V.17 14.4k FAX
120=WorldWide support
121=V.23
122=V.25bis
123=Blacklisting (*B and *d commands)
124=Access Security
140=V.32bis 14.4k DATA
141=Silent Answer [fax feature]
142=Caller ID
143=MNP 10
144=MNP Cellular
145=AutoSync
146=Enhanced Config Display (\S)
147=V.FC 28k
148=Volume Control L+/L-
149=V.FC 24k |
Optional Features cont.
150=Enhanced &F option
151=Enhanced Rate Renogotiation
153=ITU-TSS V.34 28.8
154=Silent Answer Plus
157=RINGING response
160=Supra Voice Porcession
161=Supra Voice Porcession
162=Supra Voice Porcession
170=Handset support
171=Headset Support
180=16550 UART emulation
181=SupraSmart UART
182=Rockwell high speed interface
190=AMD flash ROM
191=ATMEL flash ROM |
| ATIn |
n=0 Product Code
n=1 Checksum
n=2 RAM Test
n=3 Product ID string
n=4 Current Settings
n=5 NVRAM Settings
n=6 Link Diagnostics
n=7 Product Configuration
n=10 Optional features [fax, etc., see end] |
�
|
| ATL+/-n |
+n=1-32 Increases speaker volume
-n=1-32 Decreases speaker volume |
Relative Speaker Volume-Optional feature #148 |
| ATLn |
n=0 Low Speaker Volume
n=1 Low Speaker Volume
n=2 Med Speaker Volume
n=3 Hi Speaker Volume |
�
|
| ATMn |
n=0 Speaker Off
n=1 Speaker On Until CD
n=2 Speaker Always On
n=3 Speaker Off During Dial |
�
|
| ATNn |
n=0 Use rate in S37
n=1 Use highest possble rate |
Connection Rate |
| ATOn |
n=0 Return Online
n=1 Return Online & Retrain |
�
|
| ATP |
Pulse Dial |
�
|
| ATQn |
n=0 Result Codes Sent
n=1 Quiet (No Result Codes)
n=2 Verbose/Quiet On Answer |
�
|
| ATT |
Tone Dial |
�
|
| ATVn |
n=0 Numeric Responses
n=1 Verbal Responses |
�
|
| ATWn |
n=0 Not reported, DTE rate shown
n=1 Result reported
n=2 Not reported, DCE rate shown |
Error Correction Result Codes |
| ATXn |
n=0 Basic Result Codes
n=1 Extended Result Codes
n=2 Wait for tone before dialing
n=3 Ignore dial tone
n=4 Wait for tone, detect dialtone and
report busy |
�
|
| ATYn |
n=0 Next reset to &W0 settings
n=1 Next reset to &W1 settings
Internal Only
n=2 Next Reset to &F0 settings
n=3 Next Reset to &F1 settings
n=3 Next Reset to &F1 settings |
�
|
| ATZn |
n=0 Dipswitch #7 determines reset
n=1 Reset to &W0 settings
n=2 Reset to &W1 settings
n=3 Reset to &F0 settings
n=4 Reset to &F1 settings
n=5 Reset to &F2 settings |
Dipswitch is USR only |
| AT\Nn |
n=0 Normal connection using flow
control
n=1 Direct connection, no flow control
n=2 LAPM/MNP 5,4,3, 2 (Reliable)
n=3 Autoreliable mode (LAPM or MNP)
n=4 LAPM reliable mode
n=5 MNP reliable mode |
Operating Mode |
| AT\S |
Display configuration information |
Optional feature #146. |