insys icom 336 LL Manual page 59

INSYS Modem 336 LL
Command
ATQ<n>
AT%Q
AT&R<n>
AT*R<n>
Description
Quiet control
This command toggles sending messages from the INSYS Modem 336 LL 4D/2D
AC/DC to the application ON and OFF.
ATQ0
Send messages to application (default)
ATQ1
Don't send messages to application
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
connection. If the value increases significantly during a connection, the quality
will deteriorate. After a previous AT%E command, an
RTS/ CTS behavior
This command determines how the INSYS Modem 336 LL 4D/2D AC/DC treats
the RTS/CTS (CT105/CT106) data flow control lines.
(see also command AT&K).
AT&R0
CTS behavior complies with V.25 bis. CTS is deactivated during the
connection 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 4D/2D AC/DC 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 4D/2D AC/DC 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)
AT Command Reference
Autoretrain
is performed.
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