COURIER HIGH SPEED MODEMS
4-14 Data Mode Operations
In some microcomputer documentation, the term duplex is
applied to local online echoing, although the term is not techni-
cally accurate.
F0 Online echo ON. Sometimes called half duplex. As the
modem transmits data to a remote system, it also sends a
copy of the data to the screen.
F1 Online echo OFF. Sometimes called full duplex. Default.
Mn Speaker (audio monitor).
M0 The speaker is always OFF.
M1 The speaker is ON until carrier is established. Default.
M2 The speaker is always ON, including during data
transfer.
M3 The speaker is ON after the last digit is dialed and
remains ON until carrier is established.
Result Codes
Qn Enable/suppress the display of result codes. The Courier is
shipped with DIP switch 3 ON, to display result codes. Use the
Qn command to control the display for a current session,
independently of the switch setting.
At power-on and reset, the modem operates according to the
DIP switch setting. The Qn command is not stored in non-
volatile random access memory.
Q0 Result codes displayed.
Q1 Result codes suppressed (quiet).
Q2 Result codes suppressed in Answer mode.
Vn Return result codes in words or numbers (Verbal/Numeric
mode). At power-on and reset, the modem operates according
to the DIP switch setting. The Vn command is not stored in
nonvolatile memory as a power-on/reset default.
V0 Numeric mode.
V1 Verbal mode.
