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Speed Test

Ati Diagnostic Commands

Query the modem through the modem control panel

Windows 98/ME

1. Double click My Computer.
2. Double click Control Panel.
3. Double click Modems.
4. Click on the Diagnostics tab.
5. Click on the COM Port that your modem is on.
6. Click More Info.
7. 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

1. Click Start and go to the Control Panel.
2. Click the Phone and Modem Options.
3. Click the Modems tab.
4. Click the Properties button.
5. Click the Diagnostics tab.
6. Click Query Modem.

Windows 2000

1. Double click My Computer.
2. Double click Control Panel.
3. Double click Phone and Modem Options.
4. Select your modem from the list, then click Properties.
5. Click on the Diagnostics tab.
6. Click Query Modem.
7. 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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