The principle of operation of the autodialer program is the parallelism of calls, Autocaller automatically calls 50 contacts per unit of time.
When making a notification, the system determines the state of the number of the called subscriber, in case of a busy number or no answer, the system repeats the call after a while. In this case, all possible telephone numbers of the subscriber are traversed in parallel. If the system did not get through a certain number of times, then the task is closed automatically as 'it is impossible to get through'
Text and voice alerts are added manually