I am looking for an ATA that has had very reliable results when passing FAX over IP. I was thinking of testing the Cisco ATA 186 I1, ATA 186 I2, ATA 188 I1. This is what I'm looking for: Remote FAX -> PTSN -> CME -> over IP via SIP -> ATA -> Fax Machine What have been the good/bad results you all have seen? Thanks! Curt