Command to set the modem's inactivity timeout.
Use a single command string. For example,
HKR, Settings, InactivityTimeout,, "S30=<#>"
InactivityTimeout and CallSetupFailTimer should have "<#>", not a hardcoded value. For example, use "\T<#>" or "S7=<#>". The actual number that will be sent to the modem is based on the InactivityTimeout member of the Properties registry setting.
It is important to test these settings to verify that are accurate.
See also InactivityTimeout in the Properties registry setting documentation. InactivityScale.