General entry phone settings
Set the maximum duration of a call attempt - not greater than 4 minutes 15 seconds.
Indicates how long the call may last.
The appropriate button on the answering phone used to unlock.
Use  to answer calls
If an analogue phone line is used, this function must be enabled to receive the “Entry phone call” message, after which the number 5 can be used to answer the call.
End the call
Select a phone button to use when ending the call.
Prolonging of on-going call
Selecting a button to prolong the call (by the set call time).
A tone indicates when seven seconds remain, indicating that there is an option to extend the call time.
Enabling this allows you to call a telephone number with a leading zero.
Select the length of the short numbers