Ati Diagnostic Commands
Query the modem through the modem control panel
Windows 98/ME
- Double click My Computer.
- Double click Control Panel.
- Double click Modems.
- Click on the Diagnostics tab.
- Click on the COM Port that your modem is on.
- Click More Info.
- You should receive a response after a few seconds. Within the response window should should see ATI1, ATI2, ATI3, ... To the right of the ATIx, you will see the information the ATI command returned. Look for any legible words. ATI3 or ATI4 usually report brand names in newer modems. You should also be able to find your modem speed.
Windows XP
- Click Start and go to the Control Panel.
- Click the Phone and Modem Options.
- Click the Modems tab.
- Click the Properties button.
- Click the Diagnostics tab.
- Click Query Modem.
Windows 2000
- Double click My Computer.
- Double click Control Panel.
- Double click Phone and Modem Options.
- Select your modem from the list, then click Properties.
- Click on the Diagnostics tab.
- Click Query Modem.
- You should receive a response after a few seconds. Within the response window should should see ATI1, ATI2, ATI3, ... To the right of the ATIx, you will see the information the ATI command returned. Look for any legible words. ATI3 or ATI4 usually report brand names in newer modems. You should also be able to find your modem speed.
Issuing AT commands directly to the modem
To issue AT commands directly to the modem, you must be in terminal mode
(e.g. Terminal, HyperTerminal). The prefix AT(ATtention) must start each command
except A/ (re-execute last command). Some modems require that AT commands be in
all caps, although most modern modems will accept lower case. Spaces between
commands are not necessary but can be used to improve readability.
| AT... |
Information
|
| AT |
ATtention; should receive an OK |
| ATEX |
Echo Where X = 0-1 (0-no echo; 1=echo) Turn echo on if you
can't see anything when typing at commands in hyperterminal |
| Obtaining ATi Command Help
|
|
AT$
|
Basic AT Command Help
|
|
AT&$
|
Ampersand AT Command Help
|
|
AT%$
|
Percent AT Command Help
|
|
AT*$
|
Asterisk AT Command Help
|
|
ATS$
|
S-Register Help
|
| Getting Information about the Modem
|
| ATi0, i |
Product code(s) or speed |
| ATi3, i4, i5 |
BIOS code, chipset, firmware version |
| ATi6 |
Datapump version, link diagnostics, similar to ATi3 |
| ATi7 |
Modem info, firmware, USR - EPROM date |
| AT&Q6 |
If response is OK, Rockwell chipset: RPI |
| Getting Information about the
Connection |
| ATi6 |
USR link diagnostics |
| ATi11 |
USR link diagnostics |
| ATy11 |
USR link diagnostics |
| Using AT Commands to Connect
|
| ATA |
Answer call |
| AT0 |
Go online |
| ATD, ATH1 |
Dial Tone |
| ATDT, ATDP |
Go off-hook (DT - tone, DP - pulse). Follow with POP
number to dial POP. |
| ATH |
Hang up |
| AT+vcid=1 |
Caller ID |
| Reporting Result Codes/Speeds
|
| ATQ0 |
Report Result Codes |
| ATV1 |
Report Verbal vs Numeric Code |
| ATW2; ATMR=2 |
Report connect (DCE) speed; use this if DTE (port)
speed is being reported |
| Clear NVRAM/Reset Modem |
| AT&W0 |
Clear NVRAM, use with AT&F to reset |
| ATZ |
Reset modem |
| AT&F, AT&F1 |
Reset modem to factory defaults |
| Set Parameters |
| AT&Kx |
Set Flow Control, where x is value from 0-2 |
| AT Xx |
Where x = 0 or 1 to disable speed reporting, dial-tone detect,
etc. x = 3 for blind dialing |
| MxLx |
Speaker Control, where Mx=0-2, Lx=1-3
M0 - Speaker
always off, M1 - Speaker on during connection, M2 - Speaker always on, L1 -
Lowest volume, L3 - Maximum volume |
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