Which phone system should I buy?
Subtitle: a complete guide to key systems & mini-PBXs.
Contributors: Telecom Library.
Edition: 3rd ed.
Publisher: Telecom Library
Published: 1982
Place of publication: New York, N.Y. (205 West 19 St., New York 10011)
Language: eng
Number of pages: 241
Subjects: Telephone systems -- Purchasing.; Telephone -- Private branch exchanges -- Purchasing.
Notes: Includes index.