[asterisk-users] Minimum hardware requirements for 10 concurrent calls?

[veselin at campbell-lange.net]

Hello,
I'm considering an Asterisk box for up to 10-15 concurrent calls.
Incoming PSTN/ISDN/IAX2, outgoing PSTN/ISDN/IAX2.

Could someone roughly suggest the minimal hardware requirements for this kind of
setup?

Trying to come up with the cheapest solution.

Thank you.

Veselin K