![background image](http://html1.mh-extra.com/html/3com/etherlink-3c900b/etherlink-3c900b_installation-and-operating-instructions-manual_440908127.webp)
T
ECHNICAL
Q
UICK
R
EFERENCE
123
&Gn
Sets Guard Tone.
&G0
No guard tone, U.S.
and Canada
&G1
550 Hz guard tone,
some European
countries, requires B0
setting.
&G2
1800 Hz guard tone,
U.K., requires B0
setting.
&Hn
Sets Transmit Data (TD)
flow control (see also &Rn).
&H0
Flow control disabled
&H1
Hardware flow
control, Clear to Send
(CTS)
&H2
Software flow control,
XON/XOFF
&H3
Hardware and
software flow control
&In
Sets Receive Data (RD)
software flow control (see
also &Rn).
&I0
Software flow control
disabled
&I1
XON/XOFF signals to
your modem and
remote system
&I2
XON/XOFF signals to
your modem only
&Kn
Enables/disables data
compression.
&K0
Data compression
disabled
&K1
Auto enable/disable
&K2
Data compression
enabled