Multitech MMH900 User Manual page 141

Appendix E - Command Modem S-Register Functions
S19Not Used
S20Not Used
S21Reserved
S22Reserved
S23Reserved
S24
Sleep Mode Inactivity Timer
Unit: Sec.
Range: 0-255
Default: 0
Description: S24 is used to set the amount of time the modem
may be inactive before it will enter the sleep mode.
The range of S24 is 0 to 255. The Sleep Mode
Inactivity Time is automotically set to 5 seconds and
Sleep Mode is inhibited when S24 = 255.
S25
Detect DTR Change
Unit: 0.1 sec
Range: 0, 1 through 255
Default: 5
Description: If in on-line or command mode, changes in DTR that
last less than the time specified by S25, in 0.01 second increments,
are ignored by the command modem.
S26Reserved
S27Reserved
S28Reserved
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