User`s manual

Appendix A AT Commands
67
S14
General bit-mapped options
status: command echo, quiet
mode, result codes,
tone/pulse.
— — 138(10001010b)
S20 Sync underrun fill character. 0—255 — 0
S21 V.24/general bit-mapped
options status: DTR
behavior, DCD behavior.
— — 48(00110000b)
S22 Speaker/results bit-mapped
options status: speaker
volume, speaker control,
limit result codes, pulse dial
make/break ratio.
— — 70(01000110b)
S23 General bit-mapped options
status: guard tone type, busy
cycles, bell mode permitted
flag, ABCD dialing
permitted.
— — 54(00110101b)
S27 General bit-mapped options
status: V.90 upstream at
3429 Hz, remote digital
loop-back request handling,
bell compatibility mode,
maximum DCE speed.
— — 73(01001001b)
S28 General bit-mapped options
status: pulse dialing, mode
selection.
— — 160(10100000b)
S29 Flash dial modifier time. 0—255 10ms 50
S30 Inactivity timer. 0—255
10
min.
0
S35 Reserved. — — —
S36 LAPM failure control. — — 7
S37 Line connection speed. — — 0
S42 Reserved. — — —
S43 Reserved. — — —