Max call limit?

Hello there,
The maximum limit my call Plant seems to be 15, how can I improve it?

Asterisk Version = 13.2.0

localhost * CLI> core show channels
Channel Location State Application (Data)
0 active channels
0 max of 15 active calls (0.00% of capacity)
2 calls processed

The maximum number of calls is set using the “maxcalls” option in the “options” context of asterisk.conf. This file is commonly located at /etc/asterisk/asterisk.conf but if you are using a GUI or something it may be controlling it instead.

jcolp thank you for answer,

My device zycoo ip pbx, I see a setting that increase the call limit asterisk.conf file content is as follows my way … do you have any other solution?

asterisk.conf
[directories]
astlogdir => /var/log/asterisk
astdbdir => /etc/asterisk/sysconf/database
[options]
verbose = 3
maxload = 10.0
stdexten = macro

No, I don’t know what they may have changed in Asterisk itself too…

Assuming you bought it less than three years ago, you could ask them for the source code and compare it with the official source code.