I have a polycom soundstation 7000 SIP conf phoneI see it registered in SIPPhoneStatus from sysmonI can make calls out of this device, however when you dial the ext assigned to the device it comes up as busy. I have had 2 techs from my vendor looking this over and they cant figure out why we cant dial the device by extention. It is setup according to a document from devconnect at avaya. Everything works great except for actually calling the deviceTIAS+A