Grand River Mutual Telephone

Grand River Mutual Telephone Corporation, doing business as GRM Networks, is a telephone company providing local telephone service in Iowa and Missouri, USA.

The cities served by the company in Iowa include Lamoni and Leon, and cities served in Missouri include Bethany, Conception Junction, and Mercer.

The company owns two smaller telephone companies: Lathrop Telephone Company d/b/a LTC Networks in Missouri and South Central Communications d/b/a SCC Networks in Iowa.