CTA - Certified Telecommunications Analyst Practice Test
CTA Customer Premises Equipment & Unified Communications
What is a PBX (Private Branch Exchange) and what function does it serve in enterprise telephony?
Select your answer
A
A public telephone exchange owned by a carrier serving a city
B
A private telephone switching system within an organization that connects internal extensions and provides shared access to external PSTN lines
C
A VoIP gateway connecting enterprise LANs to the internet
D
A call recording system for compliance purposes
Hint
