It supports extensions of the same system in different buildings
it supports free calls between extensions in different locations
It supports voice mail
Centrex features allowed direct inward dialing (DID) to a telephone number and direct outward dialing (DOD) from a number without operator intervention
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Centrex was a PBX-like service furnished by the local telephone company through equipment located in the central office
Centrex phone service is mainly used for business rather than home systems. It replaces the phone operator of the company. Your phone will have 'hold' buttons or buttons that will tell you you have a call waiting, rather than the operator holding this call for you.
Centrex is a kind of telephone exchange which refers to a type of business telephone service in the UK, where customers can keep contact with special employees based on extension numbers.
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Centrex Homes offers a 24/7 online monitoring process to check up on how the construction is going on your new home. It also provides great customer care and a wonderful warranty service.
what are the features of the government system
I don't know what system you are talking about but the features of a good system are that they should be organised.
Jane Amidon has written: 'Moving Horizons' 'Michael Van Valkenburgh Associates' 'Centrex market opportunities' -- subject(s): Centrex telephone service, Market surveys, Telephone supplies industry 'Radical Landscapes' 'Le Jardin radical' 'Grant Jones / Jones & Jones: ILARIS'
Centrex
A)What security features of the operating system can be used to simplify the design of the database management system?