Modem sharing device

HOST COMPUTER

A Modem Sharing Device (MSD), also commonly known as a Line Sharing Device (LSD), modem sharer, or line sharer, allows multiple devices to share a serial connection. Only multipoint serial protocols such as bisync are supported. Both synchronous and asynchronous datastreams can be used. A common example would have a Tandem as host connected to multiple Automatic Teller Machines often with a modem or Cisco router in-between. HOST computer is alsi sometimes called primary station or control station.It is a machine intended for running user or application programs.It manages data flow by issuing commands to other stations and acting on their responses.It may also establish and manage connections with multiple stations.