Auto Registration ATA 190 - Dual registration

I don’t mess around too much with ATA devices, and I think never configured one that supports 2 DNs/FXS ports. I was surprised that when configuring Auto-Registration and connecting the ATA 2 devices came up with 2 devices, I was unsure so I looked around to get more information on this one. I used Auto Registration to save me some time. http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cata/190/1_0/english/administration/guide/sip/ATA190/a190_ag2str.html Here is the text from Cisco’s website on the ATA’s