Will the EPG600 work behind a PBX? EnGenius Updated October 18, 2017 15:46 Follow Yes, the RJ11 ports on the EPG600 will work with analog ports from a PBX. http://community.engeniustech.com/topic/735-will-the-epg600-work-behind-a-pbx/ Related articles Which IoT gateway can EnTalk with work? Will EnTalk work behind office firewall? Are there specific ports that need forwarding? Comments 0 comments Please sign in to leave a comment.