pdf Cord Switchboard Service Manual NonMultiple Types 550 551 560 IBT Ocr R Popular

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Cord Switchboard Service Manual NonMultiple Types 550 551 560 IBT Ocr R
11MB.  July 1961, Illinois Bell, PBX 75. Photos of switchboard.

Contents (TOC)

How to Help Your Extension Users 1
Private Switchboard Services 3
To Private Switchboard Operators 5
Out of Town Calls 10
Description of the Switchboard 15
Method of Operation 16
- Incoming Calls 17
- Calls from Extensions 21
- Handling Established Connections 24
- Night Connections 26
- Conference Calls 26

Suggested Phrases
The Courteous Way...

Contributed by Steve Cichorsky.  OCR / Size reduction by Clint Gilliland.

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Thanks for new documents from Chuck Hensley, John Gilbert, Chuck Batson, Alan David, Steve Flocke, Paul Wills, Dave Gruger, Jim Prather, John Stancliff, Sam Etler, John Novack, Clint Gilliland, Steve Cichorsky and Paul Fassbender.

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