Instant Messaging

Instant Messaging [ ˌ ɪnstənt mɛsɪdʒɪŋ ] (short- IM; english instant messaging ) or instant messaging communication method, in which two or more participants to chat via text messages (called chat ). It happens the transmission using push technology, so that the messages arrive directly at the receiver. The participants have to with a computer program ( called the client) be connected to each other directly or through a server over a network such as the Internet. Many clients also support the transfer of files and audio and video streams.

Users can mutually lead in their contact list and then see the presence information whether the other is ready for a conversation.

Protocols

Most IM services are due to different, sometimes proprietary protocols incompatible with each other. The following protocols are widely used:

  • Joyn - protocol and client, start in Germany: Summer 2012
  • OSCAR - Protocol for the AIM and ICQ services and related clients
  • SIMPLE - is the SIP standard IM functionality
  • Skype - Protocol and Client
  • Tencent QQ - protocol and client
  • Windows Live Messenger - protocol and client
  • XMPP - Protocol for the services WhatsApp and Google Talk
  • Yahoo Messenger - protocol and client

Term

The term " instant message " was coined by Paul A. Linebarger. He was describing in his science - fiction stories from the 1960s messages that could be sent faster than light over interstellar distances. His " instant messages " were considered extremely expensive, and he wrote some episodes that had the Unerschwinglichkeit this news on the topic.

Gajim Client (computing) Rich Communication Services OSCAR protocol AOL Instant Messenger Session Initiation Protocol LAN-Messenger Comparison of instant messaging protocols
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