7 Flashcards
What is VoIP?
VoIP stands for Voice over Internet Protocol, which is a technology that allows voice communication and multimedia sessions over the Internet.
What is PSTN?
PSTN stands for Public Switched Telephone Network, which is an aggregate of all circuit-switched telephone networks worldwide, allowing telecom networks to connect to each other and assess tolls for calls between different providers.
What is the difference between circuit switching and packet switching?
Circuit switching involves establishing a dedicated line for a user’s phone call, while packet switching encapsulates messages into packets and allows multiple users to communicate simultaneously, reducing communication costs for telecom providers.
What are some advantages of VoIP?
Advantages of VoIP include cost savings, bandwidth efficiency, additional features like conference calling and instant messaging, and the ability to store digital communications for forensic investigations.
What is CALEA?
CALEA stands for Communications Assistance for Law Enforcement Act, which requires telecommunication service providers to assist law enforcement agencies with electronic surveillance activities.
What are some challenges associated with VoIP?
Challenges of VoIP include interference, emergency service limitations, and regulatory compliance requirements for service providers, such as meeting Enhanced 911 standards.
What is a PBX?
PBX stands for Private Branch Exchange, which is a system that enables organizations to manage their incoming and outgoing telephone calls internally, facilitating both landline and VoIP calls.
What are TCP and UDP protocols?
TCP (Transmission Control Protocol) is a reliable, connection-oriented protocol, while UDP (User Datagram Protocol) is a fast, connectionless protocol commonly used for video streaming and VoIP.
