Tutorial, digital private branch exchanges (PBXs) /

Bibliographic Details
Other Authors:	Coover, Edwin R., 1942-
Format:	Book
Language:	English
Published:	Washington, D.C. : Los Angeles, CA : IEEE Computer Society Press ; [Order from] IEEE Computer Society, [1989]
Subjects:	Telephone > Private branch exchanges. Telephone switching systems, Electronic. Private branch exchange telephone equipment industry. Digital electronics.

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