CalAmp 882-GPRS series Manual de usuario descargar pdf (Pagina 42)

001-0003-822 Rev 1

Page 42 of 48

AT&Sn

DSR Configuration:

This parameter determines how the modem controls the state of the Data Set

Ready circuit. Default value AT&S0.

AT&S0 DSR always ON.

AT&S1 DSR ON when the RF signal present and phone registered on network.

AT&S2 DSR ON when connected to CDMA.

AT&S3 DSR always OFF.

AT&S4 DSR controlled via I/O control feature.

AT&Qn

CTS Configuration:

This parameter determines how the modem controls the state of the Clear to

Send circuit. Default value AT&Q0.

AT&Q0 CTS always ON.

AT&Q1 CTS always OFF.

AT&Q2 CTS flow control, terminal sets CTS low if it is unable to accept data

from host.

AT&Q3 CTS follows state of RTS.

AT&Q4 DSR Controlled via I/O control feature.

AT&Cn

DCD Configuration:

This parameter determines how the modem controls the state of the Carrier

Detect circuit. Default value AT&C1.

AT&C0 DCD always ON.

AT&C1 DCD ON when connected to remote host.

AT&C2 DCD always OFF.

AT&C3 DSR controlled via I/O control feature.

AT&Nn

RI Configuration:

This parameter determines how the modem controls the state of the Ring

Indicator circuit. Default value AT&N1.

AT&N0 RI always ON.

AT&N1 RI tracks incoming ring pulse.

AT&N2 RI always OFF.

AT&N3 RI controlled via I/O control feature.

AT&N4 RI acts as watchdog output (changes state once per second under

normal conditions).

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CalAmp 882-GPRS series Manual de usuario Pagina 42