Discrete video chat
AOL later acquired Mirabilis, the authors of ICQ; a few years later ICQ (then owned by AOL) was awarded two patents for instant messaging by the U. ), each with its own proprietary protocol and client; users therefore had to run multiple client applications if they wished to use more than one of these networks.In 1998, IBM released IBM Lotus Sametime, a product based on technology acquired when IBM bought Haifa-based Ubique and Lexington-based Databeam.As such, it could be considered a type of graphical user interface (GUI), albeit much more primitive than the later Unix, Windows and Macintosh based GUI IM software.OLMs were what Q-Link called "Plus Services" meaning they charged an extra per-minute fee on top of the monthly Q-Link access costs.Short messages are typically transmitted between two parties, when each user chooses to complete a thought and select "send".Some IM applications can use push technology to provide real-time text, which transmits messages character by character, as they are composed.
Depending on the IM protocol, the technical architecture can be peer-to-peer (direct point-to-point transmission) or client-server (an Instant message service center retransmits messages from the sender to the communication device).Many applications allow file transfers, although they are usually limited in the permissible file-size.It is usually possible to save a text conversation for later reference.Initially, some of these systems were used as notification systems for services like printing, but quickly were used to facilitate communication with other users logged into the same machine.As networks developed, the protocols spread with the networks. talk, ntalk and ytalk), while others required peers to connect to a server (see talker and IRC).
Modern, Internet-wide, GUI-based messaging clients as they are known today, began to take off in the mid-1990s with Pow Wow, ICQ, and AOL Instant Messenger.