3Com 3C421600A, Management Manual

Page: 153 / 300

Configuring 56 Kbps Technology
151
Setting V.32 300/600 Hz Tone Times
Setting the Number of Rings for Auto Answer
Setting Time to Start Dialing
Configuring 56
Kbps Technology
V.90 and x2 are ground-breaking technologies that allow servers to send
data at speeds up to 56 Kbps and clients to send data at speeds up to
33.6 Kbps.
The RAS 1500 supports V.90 as dial-in only.
Factory-enabled
Protocol
The RAS 1500 ships with the V.90 protocol factory-enabled.
Controlling Server x2 Use the following setting to disable server x2:
Command: ATS76=2
Setting Command Parameters Default
The duration, in tenths of a second, of
the EIA-specified Multimode Training
sequence for V.32 modems, which
includes 3Com Dual Standard modems
set to answer V.32 calls (set to B0).
The delay gives V.32 modems additional
time to connect with most U.S./Canada
modems at 9600 bps before falling back
to attempt a V.21 connection (to answer
overseas calls, 300 bps), 1200 bps with a
75-bps back channel). The fallback occurs
only if the modem is set for V.21 (S27, bit
0 enabled).
ATS28=n <n> = 0-255 8
Setting Command Parameters Default
The number of rings on which to answer
incoming calls when the modem is in
Auto Answer mode. Setting to 0 disables
the modem Auto Answer feature. ATS0=n <n> = 0–255 1
Setting Command Parameters Default
The number of seconds the modem waits
to dial after detecting a dial tone. ATS6=n <n> = 0–255 2