Bell Systems PBX Board Model 551

Manufacturer: Bell Systems

Model Number: 551

Serial #:

Equipment Description: PBX Board

Label Write-up:
Patch Board made by Western Electric for Bell Systems. PBX stands for Private Branch Exchange. This is used by offices, department stores, small manufacturing, and hotels to mange incoming, outgoing, and internal calls. This unit can handle 50 lines.

Dates Produced: 1940's

Original Price:

The museum's inventory number: MRT-1200

Located at Museum in: Telephone Display