AT&T DataPort PCX Modem Guía de usuario descargar pdf (Pagina 48)

AT Commands and S-Registers

B-9

Issue 3 October 1995

Table B-1. AT Command and S-Register List (9 of 21)

AT Command/

S-Register

Description

S10=

NO CARRIER DISCONNECT

255 = Disable

Sets the amount of time the DataPort PCX modem

will wait before disconnecting when no carrier signal

is detected. Accepts a value from 0 to 254 in

0.1 second increments. S10 must be set to a value

higher than the value of S9 or the modem will

disconnect before it recognizes the carrier.

Factory setting is 14 (1.4 seconds).

S11=

DTMF TONE ON TIMER

Sets the duration of a DTMF tone (touch-tone).

Accepts a value from 50 to 255 milliseconds. A value

less than 50 defaults to 50 milliseconds.

Factory setting is 95 milliseconds.

S12=

ESCAPE GUARD TIME

Sets the duration of the pause required before and

after an escape sequence (+++) for it to be treated as

an escape sequence and not data. Accepts a value

from 0 to 255 in 20 millisecond increments.

Factory setting is 50 (1 second).

S18=

TEST TIMEOUT

Sets the duration of any test initiated by the

&T command. If S18=0, a test runs indefinitely

unless manually canceled (see &T0). Accepts a value

of 0 for Disable, or from 1 to 255 seconds.

Factory setting is 0 (Disable).

S25=

DELAY TO DTR

Sets the length of time that the modem will ignore

DTR before taking the action specified by &D

. S25

specifies duration in seconds for synchronous modes

and 10-millisecond increments for other modes.

Accepts a value from 0 to 255.

Factory setting is 5.

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