[Freeswitch-users] A request from a user seeking a Unique Dial Plan Solution

HI All, I have a user that wants all DID calls to go to the receptionist . BUT if she is unavailable or ON THE PHONE then go to a sequential or parallel hunt. The full request is basically ring ext 300, if unanswered in 5 seconds CONTINUE ringing 300, but add in the other extensions. At first call intercept seemed like a great choice, but if the receptionist in on a call her phone does not "ring" so nobody knows to pick it up. I was thinking <bridge> to receptionist with timeout of 5, then <bridge) to all including receptionist. However, I am concerned that she may try to answer BETWEEN to the <bridge>s and get a dial tone. Does anyone have any clever ideas? Thanks, Sean