Asterisk 11.25 concurrent call capacity estimation

Hi Team asterisk,

We have installed Asterisk 11.25 on a Dell server with 16 cores , 8 GB ram, hardware raid 1 .

No voice recording, no audio conferences and no out bound calling.

We have SIP phones registered and 8 PRIs are connected with out echo cancellation and DAHDI is also configured for with out echo cancellation.

Asterisk server is used for receiving calls on SIP phones from PRI DIDs.
Ofcourse TDM to SIP conversion task will come into picture.

With this traffic what is the safe value of maximum concurrent calls?

Can we have all 240 channels active?