VoIP Fundamentals Flashcards
6 cards from real Business Phone Systems practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 VoIP Fundamentals flashcards as text
What does RTP stand for in VoIP communications?
Answer: Real-time Transport Protocol
RTP (Real-time Transport Protocol) carries the actual audio and video media streams in a VoIP call.
Which VoIP codec offers the highest audio quality with the most bandwidth usage?
Answer: G.711
G.711 provides the highest audio quality at 64 kbps but uses more bandwidth than compressed codecs.
What is a SIP trunk?
Answer: A virtual phone line connecting a PBX to the PSTN via the internet
A SIP trunk is a virtual connection that links an on-premises PBX to the public telephone network over the internet.
What does NAT traversal solve in VoIP deployments?
Answer: Allows VoIP traffic to pass through network address translation firewalls
NAT traversal techniques like STUN and TURN allow VoIP media to pass through NAT firewalls that would otherwise block it.
Which quality metric measures the percentage of VoIP packets that fail to reach their destination?
Answer: Packet loss
Packet loss is the percentage of transmitted packets that never arrive, which directly degrades call quality.
What is SRTP used for in VoIP?
Answer: Encrypting voice media streams
SRTP (Secure Real-time Transport Protocol) encrypts voice media streams to prevent eavesdropping.