Multitech MMH900 User Manual page 129

Appendix D - Command Modem Commands
SN=xxx S-Register Read or Write
The S command can be used to both assign a value
to or read the current value of an S-Register. (Refer
to Appendix G of this manual for the function of each
S-Register.) The format for reading a register is to
enter the letter S (upper case) followed by the
register number and a question mark ? and then hit
Return. For example, entering ATS7? and hitting
Return will display the value of Register 7 in a 3 digit
Decimal form. The number 30 would appear as 030,
and the number 255 would appear as 255.
The format for assigning a value to a register is to
enter the letter S followed by the register number
followed by an equal sign, and then enter the new
value in a decimal format. ASCII characters will have
to be converted to their decimal equivalents before
being entered. S-Register decimal values can range
from 0 to 127 for ASCII characters, or from 0 to 255
for numeric values. A complete ASCII character
Code-to-Decimal conversion chart is located in
Appendix A.
For example, if you wish to have longer pauses
caused by the comma in a dialing command, enter
ATS8=5 to assign 5 as the value for the S-Register
S8 (meaning that the modem will pause five
seconds for the comma in the dialing command
instead of the normal two). Or, if you wish to
configure the command modem to answer incoming
calls after the 30th ring, instead of after the first ring,
enter ATS0=30 and hit Return to assign the value 30
to S-Register S0.
Once an S-Register is selected, it remains selected
until another register is selected. The value of that
S-Register can then be read by entering AT? and
changed by entering AT= and the value.
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