ZyXEL Communications 2864 User Manual
Page 96
8–10
S21 Bit-mapped register; default: 178:
S22 Reserved.
Code
Bits
Bin.
Dec.
Description
&D0
(7, 6)
00
0
The modem ignores the DTR signal, DTR is
always assumed to be ON.
&D1
01
64
108.1; DTR OFF-ON transition causes dial of
the default number. DTR OFF causes hang-
up.
&D2
10
128
108.2, Data Terminal Ready, DTR OFF
causes the modem to hang up and return to
the command state. (Default)
&D3
11
192
108.2 + RST; DTR off causes the modem to
hang up and reset the modem to profile 0.
&R0
(5)
0
0
CTS follows RTS in synchronous mode.
Response delay is set in
S26
.
&R1
1
32
Ignores RTS (CTS is always ON) in synchro-
nous mode. (Default)
&C0
(4)
0
0
CD is always ON.
&C1
1
16
CD tracks presence of data carrier. (Default;
see also
S38b3
)
&S0
(3)
0
0
DSR is always ON. (Default)
&S1
1
8
DSR according to ITU-T. (See also
S44b4
,
S41b5
)
M0
(2, 1)
00
0
The speaker is always OFF.
M1
01
2
The speaker is ON until a carrier is detected.
(Default)
M2
10
4
The speaker is always ON.
M3
11
6
The speaker is ON after the last digit is dialed
out until the carrier detected.
*E0
(0)
0
0
Maintains a non-error control connection
when the error control handshake fails.
(Default)
*E1
1
1
Drops the connection if no error control is
possible.