Cisco ATA 186 SIP Cisco ATA 186 SIP and Asterisk - HowTo - https://www.voip-info.org/wiki/view/Cisco+ATA+186+SIP+and+Asterisk+-+HowTo How to resurrect a Cisco ATA 186 with Asterisk - http://www.informaticapressapochista.com/asterisk/how-to-resurrect-a-cisco-ata-186/