3Com 3C421600A, Management Manual

Page: 141 / 300

Configuring Error Control Options
139
Modifying Carrier
Receive Delay
Table 33 provides the carrier receive delay commands.
Table 33 Carrier Receive Delay
Setting Command Parameters Default
The duration (tenths of a second) of the
remote modem carrier signal before the
local modem recognizes the signal.
Ignored at speeds above 2400 ATS9=n <n> = 0–255 ATS9=6
The duration (tenths of a second) that the
modem waits after the loss of the remote
modem carrier signal before hanging up.
This setting allows the modem to
distinguish between a momentary lapse
due to line quality and a true disconnect
by the remote modem. If this value is set
to 255, the modem does not hang up on
loss of carrier.
It hangs up only when it receives the
(+++) escape code sequence and returns
to Command Mode
ATS10=n <n> = 0–255 ATS10=7
The duration and spacing (milliseconds)
of dialed touch tones. ATS11=n <n> = 0–255 ATS11=70
The 2100 Hz answer tone to disabled,
allowing V.42 modems to connect more
quickly and/or eliminating problems with
older 2400-bps modems that do not
recognize this tone ATS27.3=1 ATS27.3=0
(Enable)
The guard time (50ths of a second) for
the modem escape code sequence ATS12=n <n> = 0–255 ATS12=50
(1 second)