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
Indiana 2,821,546 975 11.79 114.96 Michigan 4,311,008 668 15.22 101.64 Ohio 4,911,597 891 12.47 111.15 Wisconsin 2,662,284 683 14.07 96.08 West North Central 9,345,853 917 11.79 108.13 Iowa 1,358,902 864 11.94 103.17 Kansas 1,252,846 899 13.06 117.34 Minnesota 2,378,681 764 12.67 96.79 Missouri 2,751,460 1,041 11.21 116.63 Nebraska 834,038 973 10.84 105.47