|The Care and Feeding of ISDN4BSD|
|6.1.3 The Entry Configuration||6.1 The isdnd.rc Configuration||6.1.5 Configuring Simple Mode|
6.1.4 Idletime Calculation for Incoming Calls
It is assumed that the calling side knows most about charging structures and such and as a consequence only the keyword idletime-incoming has a function for incoming calls.
For incoming calls the line is constantly monitored and in case there was no traffic taking place for the time in seconds specified by idletime-incoming, the call is closed.
Typically, idletime-incoming is used as a last resort and is therefore set much higher than a charging unit time: typical values are one to five minutes.