Codan Radio P25 Training Guide - Manual (Page 29)

P25 RADIO SYSTEMS | TRAINING GUIDE
Chapter 2: P25 Interface Standards Page 21
CONSOLE SUB-SYSTEM INTERFACE
The Console Sub-System Interface (Ec) is under development.
The Console Sub-System Interface (CSSI) defi nes a multi-channel digital interface. This interface
is capable of supporting standard protocols to enable interoperable support functionality. The CSSI
defi nes basic messaging structures to interface a console sub-system to an RFSS.
The CSSI can be supported using a variety of networking technologies and topologies, from a simple
star confi guration to an intelligent backbone network. The networks may be private, or public networks
confi gured as private networks.
The physical interface is an Ethernet 100 Base-T with an RJ45 connector. The CSSI will support
Ethernet 10 Base-T and 1000 Base-T as an optional physical interface. The CSSI will optionally support
auto-sensing. Other interfaces may be installed as a manufacturer’s option.
As a note, a console sub-system can connect directly to a fi xed station and support one or more Fixed
Station Interfaces. Manufacturers may also optionally support a subset of the Data Host or Network
Interface in the Console.
The Console Sub-System Interface is a sub-set of the fi xed station interface. Any device connected at
these points will arbitrate to determine the type of connection.