Enviroment variables: 3cx 10 SP6 3cx running on dedicated HP Z200 workstation intel i5, 4GB RAM (over kill i know) ~55 phones mixed Cisco SPA504 / SPA525G2 2 CyberData Paging Amplifers 3 different page groups (building 1 only, building2 only, both buildings) Issue: When a user calls the page group and makes an annoucement, doesnt matter which of the 3 paging group, occiasionally it will echo/repeat itself 3 times. it sounds like a dubstep remix of the page... its rare, but happens about once every 30 pages or so. its been happening since installation and while the users find it funny, it should not be happening. phone call quality is fine, no echo or issues with inbound or outbound calls. its only when paging. nothing shows up in the server log in 3cx after the echo. tthe echo is happening on both phones as well as on the overhead paging devices. Google search results are all about echo calls for inbound/outbound calls but nothing about paging. has anyone else expirenced this? anything to check or test?