User manual

APPENDIX 1: S-REGISTER TABLE
bit 6 - reserved
bit 7 *0 - ATA Answer
1 - ATD Originate
S15 reserved
S16 01000000 binary Bit Mapped Options(set / clear)
bit 0 *0 - AT&T0 Test Pattern off
1 - AT&T10,&T7,&T8 Test Pattern on
bit 1 *0 - RDL off
1 - RDL on
bit 2 *0 - AT&T0 LAL off
1 - AT&T1,T8 LAL on
bit 3 0 - AT&T0 LDL off
*1 - AT&T3 LDL on
bit 4 *0 - AT&T0 RDL off
1 - AT&T6,T7 RDL on
bit 5 - reserved
bit 7,6 - test pattern selection
00 - reserved
*01 - AT%T1 511 pattern
10 - reserved
11 - reserved
S17 reserved
S18 0 minute Modem Test Timer(minute)
S19 00011100 binary Bit Mapped Options(set/clear)
bit 0,1 - V25bis character framing
*00 - Async
01 - HDLC
10 - BSC
11 - reserved
bit 2 *1 - NRZ / 0 NRZI
bit 3 *1 - flag idle / 0 mark idle
bit 5,4 - word length
00 - 7-bit data, even parity, 1 stop bit
*01 - 8-bit data, no parity, 1 stop bit
10 - 7-bit data, odd parity, 1 stop bit
11 - 7-bit data, no parity, 2 stop bit
bit 6 - DTR off cause busy out /* nothing
bit 7 *0 - V.32bis fast training disable
1 - V.32bis fast training enable
S20 Reserved
S21 00000101 binary Bit Mapped Options
bit 1,0 - DCD control
00 - AT&C0 DCD forced on
*01 - AT&C1 DCD on after connect
10 - V.13 HDX
11 - V.23 HDX
bit 2 0 - AT&R0 RTS normal
*1 - AT&R1 RTS forced on
bit 4,3 - DTR on-to-off action
*00 - AT&D0 Ignore(force on)
01 - AT&D1 recall command mode
10 - AT&D2 Disconnect
11 - AT&D3 reset modem
bit 5 *0 - CTS off in retrain (CCITT)*
1 - CTS follows RTS (EIA)
No Default Unit Function Description
bit 6 *0 - AT&S0 DSR forced on
1 - AT&S1 DSR on after connect
bit 7 - reserved
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