Well, I've been looking at this to try and figure out what is going on. 
The main console is 7000, w/ No Reroute, 1st 7056, 2nd Normal.
So the concern is, if someone is calling the main number 4375, which is ringing at the console, I am thinking it follows the path above and then it hits the menu node below?  So calls go past all these extensions, before defaulting to the Operator Extension ?   
Extension  Oper Ext      1       2      3      4       5      6       7      8      9
   4375          0           6554 6559 6326 6911 6520 6556 6937 6537 6545
Lastly, it must end up on that operator voicemail that I have to create some type of notification for.
Thanks.