
Status Registers & Result Codes 113
Command bit dec hex Function and description Ref.
command)
S27= bit dec hex Bit mapped register
0-2
Modem error control
0 0 No error control &K0
1 1 MNP4 + MNP3 (see also
S41.0)
&K1
2 2 MNP4 + MNP5 (see also
S38.5, S41.0)
&K2
3 3 V.42+MNP4 &K3
4 4
V.42 + V.42bis (compatible with
&K2)
&K4
3-5
0 0 Flow control disabled &H0
24 18 Hardware (RTS/CTS) flow
control
&H3
32 20 Software (XON/XOFF) flow
control
&H4
40 28 Reserved &H5
6-7
Signal quality
0 0 No response to poor signal
quality
*Q0
64 40 Retrain action taken if signal
quality *Q1 is poor
*Q1
128 80 Adaptive rate (auto fall-back
/forward) when signal quality
changes
*Q2
S41.2
192 C0 Disconnect when signal quality is
poor
*Q3
S28= bit dec hex Bit mapped register +068
0 0 0 Single line RJ-11 phone jack
(default)
&J0
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