Filter
Top Products
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.