pdf CO Equipment Training, Lesson 6, PBX Systems Popular
By Paul F 329 downloads
CO_Equip_Lesson_6_PBX_tci_bm.pdf
1. History and Development
2. General Description of PBXs
506, 551, 552A, 605A, 606A, 701A, 702A, 711A, 740, 750A, 755A, Braille PBX
Contributed by John Novack
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