The Cortelco 250044-VBA-20MD Corded Desk Telephone is a conventional system phone designed for office use. This desk telephone, manufactured by Cortelco in the United States, features a single line capability and an interface compatible with DSL/Phone (RJ-11). With its model number 250044-VBA-20M, this phone is ideal for business settings looking for a reliable and straightforward communication solution with the trusted brand of Cortelco.