My first asterisk box is up an running! I have 2 ATAs on my local net. One is a Cisco ATA-186 with SIP 3.1.0 software. The other is an ATCOM AG-168V with V1.42.028 IAX2 firmware. After dialing the extension it takes about 10 sec for the other phone to ring. A little more the Cisco to ATCOM, a little less in the other direction.