An-Ser Services, Inc. traces its origins to Tel/Sec, founded in Appleton, Wisconsin in 1949, and to Madison Medical Bureau, now called The An-ser, founded in Green Bay, Wisconsin in 1950. Over the years, we have been a leader in the telephone answering service industry as well as radio paging services. We created the first wide-area paging system in Wisconsin and then sold it to Ameritech in 1989. We now provide an assortment of operator services, including taking orders and providing a variety of customer services.

1949: Tel/Sec founded by Margaret Walsh
1950: Madson Medical Bureau founded by Elmer Madson
1970: Madson Medical purchased by Margaret Walsh
1970: Name changed to Tel/Sec of Green Bay
1972: Allen Fromm purchased Tel/Sec of Green Bay
1973: Name changed to An-ser
1981: An-ser receives license from FCC to offer radio paging services
1989: Paging system sold to Ameritech
2001: An-ser purchases An-ser-Plus based in Des Moines, Iowa
2004: An-ser purchases Area Telephone Secretaries of Janesville, WI