IBM MOBILE COMBO ADAPTER PRO/100 SP - Manual (Page 37)

Range: 0-255
Default: 0
S32 Synthetic Ring Volume
This register specifies a synthetic ring volume.
Range: 0-255 (allowed, but not meaningful)
Default: 10
S33 Synthetic Ring Frequency
This register specifies a synthetic ring frequency. There are five choices, with 0
meaning disabled.
Range: 0-5
Default: 0
S35 Data Calling Tone
Data Calling Tone is a tone of certain frequency and cadence as specified in
V.25 which allows remote Data/FAX/Voice discrimination. The frequency is
1300 Hz with a cadence of .5 s on and 2 s off.
0 = disabled, 1 = enabled
Range: 0-1
Default: 0
S37 Dial Line Rate (default 0)
This register sets the maximum line data rate. In K56flex and V.90 mode, S37
controls the upstream V.34 rate.
S37 = 0 auto rate
S37 = 1 reserved
S37 = 2 1200/75 bit/s (V.23)
S37 = 3 300 bit/s
Appendix B. Modem function B-11