Do you have figures for the actual power consumption of the Xorcom servers and Astribanks?
Sure do! Note that these are the typical numbers for Xorcom IP/PBXes and telephony modules (not the maximum numbers that appear on our data sheets).
32 port FXS (normal/ typical port usage) - 25 Watts
32 port FXS (all ports are busy) - 75 Watts
4 ports PRI - 12 Watts
The PBXes without telephony modules inside:
CXS1000 (Spark) - 1.75 Watts
XR1000 - 35 Watts
XR2000 - 45 Watts
XR3000 - 82 Watts
Compare those numbers to power-hungry proprietary PBX solutions and you'll see how "green" the Xorcom equipment is...