What
can I do to make the "real" throughput
better?
Not every
PSTN system in the world offers enough bandwidth
for voice
band modems to transmit data at speeds up to 28.8kbps
(or 33.6kbps). The modem will have to resend data
if an error occurs in the data stream through the
telephone line (all nearby electrical equipment
can potentially cause "noise", resulting
in such errors). Thus the real throughput will
be slowed down dramatically. To prevent this problem,
you can select a lower DCE speed. For example,
if the modem connects to a remote site at 28800bps,
but the SQ value is only 5~6 (displayed on the
LCD of the T-288C), you can select a lower modem
speed such as 26400bps or 24000bps to get a higher
SQ (8~9 is optimal). Exact parameters for every
case vary, however, for Internet connections try
the following: AT&F1&D2S56=27S30=234, this
will set a higher standard for V.34. If you would
like to set the modem via the front control panel,
please set the following parameters:
