All about PABX systems
Subtitle: a Datapro report
By: by the editors of Datapro reports on telecommunications.
Contributors: Datapro reports on telecommunications.
Publisher: Datapro Research Corp.
Published: 1984
Place of publication: Delran, NJ (1805 Underwood Blvd., Delran 08075)
Language: eng
Number of pages: 151
Subjects: Telephone -- Private branch exchanges.