Motorola V635

I purchased on unlocked V635 and I was able to get all the Cingular setting to work just fine. However, the "roaming indicator" (solid triangle) is on constantly. The Networks the phone sees are Cingular 310-380 and 310-170, the phone is set to "automatic- I'm trying to figure out why the phone thinks it's roaming. I'm on Cingular in Los Angeles.

Any help would be appreciated.