Syracuse, NY and I have a CS1000M. When using the LD trunk I don't have a problem reaching this area code (503 - Portland, OR), but I get a busy signal when I try and dial certain prefix's. In other words, I dial a Wal-Mart with 503 area code, I get through. I dial this person's cell with a 503 area code I get busy. Would that be a local provider's issue or something in LD 90 with NXX? It just don't make no darn sense.