ZyXEL Communications 2864 Series User Manual page 96

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