in the log I have "no answer" but never ringing in My zoom phone , use SBC trunk

I have SBC -Zoom Trunk , when I  send calls  from anynode SBC to  zoom peer , 

     

 

    When I send call from SBC to zoom ( call center ) , for exemple to Queue or extension  (ext 3812) , in the  log  the call is registered as "  no answer"   but  the zoomphone never ringing  in my hand ? it s same when I call the Queue 1809.

 

in the diagram of SIP  , I have  the correctly the process (  invite --  try --  ringing  --  OK 200 --  Bay ) et 

 

any one can help ?

 

best  regards