Hayes-microcomputer-products ASLH306 Manual de usuario descargar pdf (Pagina 11)

ASL Holdings Limited 19/09/2005 11

Draft Copy Version 2c

AT &C

Carrier control. This parameter defines the operation of pin 8 (DCD) of the

RS 232C interface.

AT &C0 = Always on

AT &C1 = Fixed to this setting – Carrier goes high when on line.

AT &C3 = Off in command mode – On when modem on line

For compatibility only. ie modem will respond with OK but not take any action.

AT &D

Data Terminal Ready options

This command controls the handling of the DTR line. (Pin 20).

AT&D0 - DTR state is ignored and no action is taken. This is the equivalent of

holding DTR permanently active (high).

AT&D1 - Returns the modem to command mode on loss of DTR. This is the

same as issuing the +++ escape sequence, i.e. the modem will go into

command mode, but will not drop the line.

AT&D2 - Prevents the modem from originating or answering a call unless

DTR is raised by the DTE, and if the modem is online when DTR drops, the

call will be disconnected.

AT &F

Restore Factory Configuration

Configures the modem to factory default settings

(Does not default AT+ autosave commands).

AT&V

This command shows the general set up of the modem. Displays, for example

(Version 3.03 firmware):

at&Ve?v?q?x?&c?&d?s0?s2?s3?+cbst?

306 v3.03 S1 1200N G0 P0

E: 1

V: 1

Q: 0

X: 4

&C: 1

&D: 0

001 (S reg. 1)

043 (S reg. 2)

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Hayes-microcomputer-products ASLH306 Manual de usuario Pagina 11