Unfortunately, that is not possible in the service editor using the Flow Control Element. Those are mainly used in the Dial Plan of the ECS. That request comes up a lot though. Two options, choose one or do both:
Option 1:
One thing you can do is put in a feature request. You must be logged in to do this. From the supportforums home page, on the right hand side under Community Links, click on “Feature Requests” then the link for the Unified Communications and follow the steps or you can just click here:
https://supportforums.adtran.com/community/netvanta/netvanta-unified-communications/feature-requests
Option 2:
Not sure exactly what are trying to accomplish but there is one thing you could kinda do to work around this. Is from the dial plan you could create rule that all calls from the 303 area code destined to that user (6605) in my example below gets sent to a special auto attendant (7705 in my example). When you make the 7705 auto attendant identity, make sure you assign it to the user of 6605 so he can create a service to assign to it. Make sure to set the priority to 10 in the dial plan entry. See attachment/image of the dial plan entry that I created. I tested it and it worked for me. Only work around I could think about. You can try it and test it out if you like. Hope that helps.
-Mark
