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:
