IBM MOBILE COMBO ADAPTER PRO/100 SP - Manual (Page 41)

Table 7: S36 and S48 Configuration Settings
S48 = 7 S48 = 128
S36 = 1, 3 LAPM or async async
S36 = 4, 6 LAPM, MNP, or hangup MNP or hangup
S36 = 5, 7 LAPM, MNP, or async MNP or async
S89 Timer to Control Sleep Mode
This command displays the number of seconds of inactivity (no characters sent
from the DTE, no RING) in the off-line command state before the modem
places itself into standby mode. A value of zero prevents standby mode.
Note: If a number between 1 and 4 is entered for this register, it will set the
value to 5, and the inactivity before standby will be 5 seconds. This is
done for compatibility with previous products which allowed time-outs
down to 1 s.
Range: 0, 5-65
Default: 10
S90 Read-only Local Phone
This register tells the status of the Local Phone. It is read-only.
0 = on-hook
1 = off-hook
S91 Line Transmit Level
This register is effective only for Japan. It specifies the line transmit level in
dBm with an implied minus sign.
Range: 6-15
Default: 15
Units: 1 dB
S108 Network Codec Type
S108=22 m-Law
Appendix B. Modem function B-15