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CHAPTER 4: Operation
56 (56K Mode [56,000–28,000 bps]):
The 56 indicator lights whenever the modem is set for
or connects using the V.90 or V.92 protocol. The actual
connection speed depends on ISP server capabilities and
line conditions.
33 (V.34 Mode [33,600–16,800 bps]):
The 33 indicator lights whenever the modem connects
using the V.34 protocol.
14 (V.32 bis Mode [14,400–12,000 bps]):
The 14 indicator lights whenever the modem connects
using the V.32 bis protocol.
NOTE
Though the modem can connect at lower than V.32 bis speeds, no
speed indicator lights during the connection.
OH (Off-Hook):
The OH indicator lights when the modem is off-hook,
which occurs when the modem is dialing, on-line, or
answering a call. The LED flashes when the modem
pulse-dials.
TR (Terminal Ready):
The TR indicator lights when a communications
program is using the modem. It means the modem is
ready for an outgoing or incoming call. It goes off when
the communications program disconnects the serial
port. When it goes off, a connected modem will also
disconnect.
EC (Error Correction [V.42]):
The EC indicator lights continuously when the modem
is in V.42 error correction mode, and flashes when
compression is activated.
FX (Fax)
The FX indicator lights when the modem is in fax mode.
