User's Guide for ZyXEL Omni 56K USB Modem
5-26S25= 0 to
255 0-FF Specify the time delay that DTR signal needs to be
OFF before it is recognized, in 10 ms units. If S25=0,
the delay time is set to 4 ms.
+000
S26= dec hex RTS/CTS delay. +000
0 to
255 0-FF Set the delay, in 10 millisecond units between the
RTS and modem’s CTS response in synchronous
mode. (see ‘&Rn’ command)
&Rn
S27= Bit dec hex Bit-mapped register. +156
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) (Default) &K4*
3-5 0 0 Flow control disabled. &H0
24 18 Hardware (RTS/CTS) flow control. (Default) &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 is poor. *Q1
128 80 Adaptive rate (auto fall-back/forward) when signal
quality changes. (Default) *Q2
192 C0 Disconnect when signal quality is poor. *Q3
S28= bit dec hex Bit-mapped register. +068
2-3 0 0 Destructive, expedited break. &Y0
1 4 Non-destructive, expedited break. (Default) &Y1
10 8 Non-destructive, un-expedited break. &Y2
4-5 0 0 No guard tone. (Default) &G0
16 10 550 Hz guard tone. &G1
32 20 1800 Hz guard tone. &G2
6 0 0 DTE/DCE rate follows link rate. (See also S18,
S44b6) &B0
1 64 DTE/DCE rate is fixed at the DTE setting, range from
300 to 460.8 Kbps. (Default, also see S18, S44b6) &B1
S29= 0 to 3 0 to 3 Set default dial phone number pointer, use AT&Zn=s
to store phone numbers in EEPROM. +000 *D
S31= 0-255 0-FF Holds the ASCII decimal value of the XON. +017
S32= 0-255 0-FF Holds the ASCII decimal value of the XOFF. +019
S35= bit dec hex Bit-mapped register. +032