There are so many ways to make this work. Seriously, easiest (and less programming) is simply set trunks to normal (default) your ring group your no answer to ring group 102 (main AA). Record your mailbox greeting in instruction 001 set timeout to 1 second and REC2 to your VE mailbox. This has the added bonus of your AA actually working if you need to get in remotely. This also works for DID routing as well. Then you can assign that mailbox to any and all extensions as mentioned above. Again this is one of many ways to accomplish the same thing. VERY few systems allow this kind of flexibility.