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COMSPHERE 3800Plus Modems
6-2 November 1996 3980-A2-GB30-20
VF
VF displays the condition of the dial or leased-line
connection.
T
o access VF from the Status branch, make the
following selection:
F1
Status:
VF Identity
F2
F3
Select VF.
F1
Status : VF >
SigQual = Excelent
F2
F3
The modem’
s signal quality is displayed on the LCD’
s
bottom line. Press the
key to scroll and view the
receive signal level, signal-to-noise ratio, near end echo,
far end echo delay, and echo frequency offset.
NOTE
SigQual, NearEcho, FarEcho,
FarEchDel, and EchoFreqOff
values appear only for V.34,
V.32
terbo
, V
.32bis, and
V.32 modulations.
SigQual Signal
Quality indicates the
condition of the VF line.
Possible values are
Excelent
(Excellent), Good, Fair, Poor,
or
No Signal.
RevLev
Receive Signal Level indicates,
in decibels referenced to one
milliwatt (dBm), the actual
strength of the incoming signal.
Sig/Noise Signal-to-Noise Ratio
indicates, in decibels, the
receive signal strength relative
to noise on the line.
NearEcho Near End Echo displays the
signal level, in decibels
referenced to one milliwatt
(dBm), of that portion of the
transmit signal which has been
echoed back by the local line
termination.
FarEcho Far End Echo displays the
signal level, in decibels
referenced to one milliwatt
(dBm), of that portion of the
transmit signal which has been
echoed back by the remote line
termination.
FarEchDel Far End Echo Delay indicates
the roundtrip delay in
milliseconds of the far end
echo.
EchoFreqOff Echo Frequency Offset
indicates the frequency offset
of the far end echo.
T
o exit VF and remain in the Status Branch, press the
key
. To exit and return to the Top-Level menu, press
the
key
.
AT Command Equivalent
There
is no A
T command equivalent for VF status.