Beyond private lines
Subtitle: advanced services : communications systems & services.
Contributors: Yankee Group.; Communications/Information Systems.
Publisher: Yankee Group
Published: 1987
Place of publication: Boston, MA (200 Portland St., Boston 02114)
Language: eng
Number of pages: 117
Subjects: Telecommunication -- United States.; Telephone -- United States.; Telephone -- United States -- Multiplex systems.; Data transmission systems.; Market surveys -- United States.
Notes: At head of title: Communications/Information Systems.