PBX stands for which term?

PBX stands for which term?

• A. Public branch exchange
• B. Private network exchange
• C. Private branch exchange
• D. Public switched telephone network

Answer: (C)

PBX stands for Private Branch Exchange. It’s a private telephone switching system located on a company’s premises that connects internal extensions to each other and to the outside world through lines to the Public Switched Telephone Network. The “private” part means the system is owned by the organization, “branch” refers to the internal lines that connect to individual extensions, and “exchange” indicates the switching that directs calls. This differs from the Public Switched Telephone Network, which is the external network, and from terms like a public branch exchange or a generic private network—these describe other parts of the telecom landscape, not the private internal system.

PBX stands for Private Branch Exchange. It’s a private telephone switching system located on a company’s premises that connects internal extensions to each other and to the outside world through lines to the Public Switched Telephone Network. The “private” part means the system is owned by the organization, “branch” refers to the internal lines that connect to individual extensions, and “exchange” indicates the switching that directs calls. This differs from the Public Switched Telephone Network, which is the external network, and from terms like a public branch exchange or a generic private network—these describe other parts of the telecom landscape, not the private internal system.