
56K Softmodem
Command Reference
- 85
Table 5-3: S-Register Summary
Note: * Values presented in decimal except where noted.
Register Description Range Base Unit Default*
S0 Auto answer ring number. 0—255 Rings
0†
S1 Ring counter. 0—255 Rings 0
S2 AT escape character (user defined). 0—255 ASCII 43(2Bh)
S3 Carriage return character. 0—127 ASCII 13(0Dh)
S4 Line feed character. 0—127 ASCII 10(0Ah)
S5 Back space character. 0—255 ASCII 8(08h)
S6 Time for dial tone. 3—255 s
3†
S7 Wait time for carrier. 1—255 s
50†
S8 Pause time for dial delay modifier. 0—255 s
2†
S9 Reserved.
—
— —
S10 Reserved.
—
— —
S11 DTMF tone duration. 50—255 ms
95†
S12 Escape guard time. 0—255 20 ms 50
S20 Sync underrun fill character. 0—255
—
0
S21 V.24/general bit-mapped options sta-
tus: DTR behavior, DCD behavior.
—
—
48(00110000b)
S29 Flash dial modifier time. 0—255 10 ms 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.
—
— —
S48 V.42 negotiation control.
—
—
7
S54 Blind dialing delay. 2—255
—
2
S90 Reserved.
—
— —
S91 PSTN transmit attenuation level. 6—25
–
dB
10
S92 FAX transmit attenuation level. 6—25 dB 10
S93 DTMF transmit attenuation level. 5—25 dB 6
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