I'm interested in building an android app that calls another android app via the Asterisk server. It will be strictly SIP to SIP without connection to a PSTN.
I've read you can have thousands of concurrent calls based on the set up of this OP here: Performance of Asterisk Telephony System on Linux
So my next question is, I heard briefly that some systems administrators like to impose a limit on the number of concurrent calls. Is the advantage here mainly to control the bandwidth and resources used on the computer? Or are there other considerations?