I dont know if this is a bug or limitation. I want a \+44.@ using a Mob Route Filter to match a dialled number of +447917123456, so have a route filter with a tag of Mobile Access and Mobile Subscriber exists (so no National Access i.e. the leading 0).
US Cellular - Baraboo 906 Us Highway 12, Ste 102, Baraboo WI 53913 Phone Number: (608) 356-9380
Baraboo is a city in and the county seat of Sauk County, Wisconsin, United States. The largest city in the county, Baraboo is the principal city of the Baraboo Micropolitan Statistical Area. Its 2010 population was 12,048. It is situated on the Baraboo River.