62
%E1
Enable auto retrain based on line quality.
%G
Rate Renegotiation (Fall Back/Forward)
Based on line quality monitor readings. Fall Forward only if “good” quality for period set in
S190.
GØ
Disabled.
%G1
Enabled: monitor line quality and automatically request a rate renegotiation if line
conditions are bad (default).
%L
Line Signal Level
Return a value which indicates received signal level.
%Q
Signal Quality
Report signal quality, also known as Eye Quality Measurement (EQM), at the instant the
command is issued while a connection is established, and modem is in local mode (i.e.,
+++
has been issued). The values for V.32 & V.32bis connections and V.34 & VFC rates are not the
same, but follow the same concept. The Range is Ø to 127.
For V.32 & V.32bis carriers:
nnn=0 to 7 signal excellent (higher rate may be used)
Modem tends to rate renegotiate UP to a higher rate
nnn=8 to 20 signal good (best carrier rate for line conditions)
nnn=21 to 30 signal poor (lower carrier rate should be used) Modem tends to renegotiate
DOWN to a lower rate
nnn=31 to 127 signal very bad (or gone), try forcing a lower rate. Modem tends to RETRAIN.
For V.34 carriers approx values below apply:
nnn=0 to 19 signal excellent (higher rate may be used) Modem tends to rate renegotiate UP
to a higher rate.
nnn=20 to 50 signal good (best carrier rate for line conditions)
nnn=64 to 69 signal poor (lower carrier rate should be used) Modem tends to rate renegotiate
DOWN to a lower rate.
nnn=70 to 127 signal very bad (or gone), try forcing a lower rate. Modem tends to RETRAIN.
%Q1 Connection Stats
On K56 connections these items are reported:
K56 EQM (Average over the last second)
RX Level (Same as
%L
)
TX Level (Current TX level in dBm)
TX data rate =(now), min, max
RX data rate =(now), min, max
On V.32/V.32bis connections these items are reported:
EQM (Same as
%Q
)(Average over the last second)
RX Level (Same as
%L
)
TX Level (Current TX level in dBm)
TX data rate =(now), min, max