I am running 3CX 7 on a windows 2008 server. I have a sangoma A101D card and polycom soundpoint ip 560 phones. Outbound calls and extension to extension calls work perfectly. When someone calls in we can hear them but they cannot hear us. Also when someone calls in they can hear the prompts but not the ringing or hold music. I have been working with sangoma but they haven't been much help. I am getting desperate and my bosses aren't happy. Any help would be greatly appreciated.