Some of the popular audio and video intercommunication systems services include:

• Video Conferencing:
  

  This service allows people to communicate and collaborate with each other in real-time using video and audio. It is commonly used in businesses, schools, and healthcare to conduct remote meetings, training sessions, and consultations.

• Teleconferencing:
  

  This service allows multiple parties to participate in a conference call using a phone or other communication devices. It is commonly used in businesses to conduct remote meetings and discussions.

• Webcasting:
  

  This service allows people to broadcast live video and audio content over the internet. It is commonly used in businesses and education to conduct remote presentations and lectures.

• Streaming:
  

  This service allows people to watch live or pre-recorded video content over the internet. It is commonly used in entertainment to deliver movies, TV shows, and music.

• Video Production:
  

  This service involves the production and editing of video content for various applications such as marketing, training, and entertainment.