However it is the more advanced service processors which really enable system administrators to better monitor and troubleshoot servers by providing extended power control, KVM and serial console access in addition to hardware monitoring and alerts.
Service processors are becoming the standard out-of-band management interface for server administration.
So the service processor is set to displace these older administration solutions to become the default access path used by system and network administrators for central or remote control of their server and storage devices.
ChannelServiceUnit, a hardware device used to interface between a serial port and a digital circuit, generally a device used to connect a digital circuit to a serial interface is a "CSU/DSU".
Channelserviceunits are used to connect a digital phone line (T-1 or Switched 56 line) coming in from the Telco to either a multiplexer, channel bank directly to another device producing a digital signal, i.e., a digital PBX, a PC or other data communications device.
ChannelServiceUnit is a device that provides an interface between codecs and transmission facilities.