I just finished an ELX 3000 install with 21 aastra 57i phones and 12 fxo's. The install went very smooth and works great. I have another install next week of an ELX 3000 with 47 aastra 57i phones and a T1. I also have more opportunities down the road for several several several more installs. GREAT PRODUCT! Our sales team is so excited about this product and is pushing it hard. I am glad I was finally able to convince the owners of my company to include this product as one of our flagship lines. I can't wait for the ECT training to come back to the US. Our company is planning on sending several techs.