I have a vg224 fxs port and a Cisco 7975 ip phone sharing the same number and would like to configure call barging so that when a call is receieved on the cisco ip phone the user can pickup his analogue phone connected to the vg224 to continue the conversation. I have followed the configuration guide here
http://www.cisco.com/en/US/docs/ios/voice/fxs/configuration/guide/fxscbargepriv.html but not much luck so far. According to the requirement a conference bridge must be present to handle the call so I enabled the built in bridge on the 7975 IP Phone and disabled privacy but it is still not working. below is my configuration for the vg224 port according to the document. I am using CUCM 8.6 and the IOS version of the vg224 has been upgraded to 15.1. Any help would be appreciated.