INSYS Modem 336 LL 2D/4D 5.x Originate / Answer Manual page 60

AT Command Reference
Command
ATQ<n>
AT%Q
AT&R<n>
AT*R<n>
60
Description
Quiet control
This command toggles sending messages from the INSYS Modem 336 LL 2D/4D 5.x
Originate / Answer to the application ON and OFF.
Send messages to application (default)
ATQ0
Don't send messages to application
ATQ1
Display telephone call quality
Displays the quality of the data connection (deviation from the eye diagram). Low val-
ues indicate a good line quality. The line quality value must be evaluated differently
depending on the negotiated data rate.
Connections with more than 9600 baud will reach the value "000" for good lines and
should not have values of more than "010".
For connections with 33600 baud good lines will have values between 010...030. De-
pending on the settings and the modulation type a fall back or retrain is triggered if the
line quality is too bad to enable a new negotiation of the connection (if necessary with
a slower speed).
High values indicate bad quality. These values are constantly updated during a connec-
tion. If the value increases significantly during a connection, the quality will deteriorate.
After a previous AT%E command, an Autoretrain is performed.
RTS/ CTS behavior
This command determines how the INSYS Modem 336 LL 2D/4D 5.x Originate / Answer
treats the RTS/CTS (CT105/CT106) data flow control lines.
(see also command AT&K).
AT&R0 CTS behavior complies with V.25bis. CTS is deactivated during the con-
nection setup after recognition of the response or ringing tones and will
only be activated after the connection is set up. During the controlled
half duplex operation (AT&K8) CTS is active, if the INSYS Modem 336 LL
2D/4D 5.x Originate / Answer sends data at the serial interface. When
data is received at the serial interface, CTS is inactive.
AT&R1 CTS only switches to OFF when this is required by the data flow control.
During the controlled half duplex operation (AT&K8) CTS is inactive, if
the INSYS Modem 336 LL 2D/4D 5.x Originate / Answer sends data at
the serial interface. When data is received at the serial interface, CTS is
active. (default)
Switches the remote control on and off
AT*R0 Switches the remote control OFF
AT*R1 Switches the remote control ON (default)
INSYS Modem 336 LL 2D/4D 5.x Originate / Answer