VOIP

Digital voice transmission

VOIP, or VoIP, stands for Voice over Internet Protocol—technology that transmits phone calls through the internet rather than traditional telephone lines.

Services like Skype and Zoom use VOIP.

The term appears in business contexts: We switched to a VOIP system to cut costs.

Pronounced as either the initialism V-O-I-P or as a word rhyming with "boy."

infrastructure

PBX

Private branch exchange

firewall · modem · ethernet · broadband · ISP · cloud · hosted · on-premise · trunk · endpoint

services

Skype

Online video calling platform

Viber · FaceTime · WebEx · GoToMeeting · Slack · 8x8 · WeChat

calling

call

Contact by phone

hold · transfer · forwarding · voicemail · caller-ID · three-way · dial · extension · ring · mute

protocol

codec

Data compression algorithm

  • UDPConnectionless transmission standard
  • jitterSmall, rapid variation
  • latencyDelay in system response

bandwidth · compression · encoding · decoding · handshake · signaling · bitrate · sampling · buffering · payload

quality

clarity

State of being understandable

choppy · crystal-clear · wideband · static · interference · distortion · lag · reliability · uptime · connectivity

Opposites
telecommunication technology type

VOIPlandline

Stationary wired telephone

POTS · PSTN · rotary phone · home phone · desk phone

communication modernity

VOIPlandline

Stationary wired telephone

telephone exchange · switchboard · party line · telegram · carrier pigeon

Phrases
Family

voice, voiceless

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Rated G