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 Telecommunications Object Thesaurus Term

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private manual branch exchange


Plural:
private manual branch exchanges

Initial Reference:
BT Museum - List of Simple Names (1985)

Top term:

Broader term:

Use for (non-preferred term):
PMBX  

Scope notes:
Switchboard based system for use in a customer's premises, allowing a number of network exchange lines to be used across a number of in-house extensions. Calls between the extensions were connected by one or more in-house switchboard operators.



 
 



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