AT Command Summary (continued)

Command

Description

 

 

Sr?

Reads value stored in r

 

 

Sr=n

Sets register r to n

 

 

V0

Returns result codes as numbers

 

 

V I

Returns result codes as words

 

 

X0

Enables basic result codes (0-4)

X1

Enables extended result codes (0-5, 10)

I

I

X2

Enables extended result codes (0-6, 10)

 

 

X3

Enables extended result codes (0-5, 7, 10)

 

 

X4

Enables all result codes

 

 

Y0

Disable long space disconnect

 

 

Y1

Enable long space disconnect

 

 

Z0

Software reset; recalls user configuration O

Z1

Software reset; recalls user configuration 1

&C0

DCD signal always on

I

I

I

&C1

DCD signal on when carrier present

 

 

 

 

&D0

Ignore DTR signal

 

 

 

 

&D1

Returns to command mode when an on-to-off DTR

 

 

transition occurs

 

 

 

 

&D2

Hangs up and returns to command mode when an

 

 

on-to-off DTR transition occurs

 

 

 

 

&D3

Resets when an on-to-off DTR transition occurs

 

 

 

 

&F

Loads factory configuration settings

 

 

 

 

&G0

No guard tone in CCITT mode

 

 

 

 

&G1

550 Hz guard tone in CCITT mode

 

 

 

 

&G2

1800 Hz guard tone in CClTT mode

I

&P0

Pulse dial make/break ratio = 39%/61% (US.)

 

 

 

 

&P1

Pulse dial make/break ratio = 33%/67% (UK.)

 

 

 

 

Fax/Modem B-5