Yes, you can set a global variable and use the global variable instead of the CC number. I generally set up global variable in one place and set them at project start as shown in this tutorial.
Now if you are talking about using different ports instead, this tutorial on the use of aliases may be of interest to you.
If port selection management is of interest to you, check out this tutorial.
Steve Caldwell
Bome Customer Care
Also available for paid consulting services: bome@sniz.biz