Maximum - 300 calls initialize in 1 second.
I have a SIP trunk with 300 concurrent calls availability.
Before making a bulk, my application first checks the number of free channels in SIP trunk (off course with asterisk -rx + grep + sed command) .
Usually in my app ~3000-10000 calls are made per day + SMS.
It’s not only for notifying, users are using a speech recognition + synthesize + another dificult call scenarios.
If user create some bulks with 10000 numbers, my app have to call them ASAP.
While I had a trunk with 100 simultaneous calls, there were no problems. After the provider increased the channels to 300, problems began with nohup+asterisk -rx

Now instead of resting on the weekend I have to rewrite the code to AMI or call files.
BTW how fast is AMI originating and call files? Will it handle 300 calls initialize in 1 second?