17-09-2016, 03:26 PM
1455180612-12RAINETIPDSLAM.pptx (Size: 1.42 MB / Downloads: 8)
INTRODUCTION
Railnet is intranet of Indian Railways.
It is aimed to provide computer connectivity between Railway Board,
Zonal Railways, Production Units,
RDSO, Centralized Training
Institute.
OBJECTIVES
Paperless working.
Quick and efficient automatic status updates(Information on demand).
Internet Gateways have been established at Delhi, Mumbai, Chennai, Kolkatta.
Equipments used for Railnet
Router
Switch
Modem
LAN Extender
Different types of server
Media converter(For OFC)
DSLAM
E1 to Ethernet Converter
CPE
Router
It is a device that connects different networks and routes packets of data from one network to another.
Routers have various ports like ethernet port and serial port to connect diff networks of diff places.
DSLAM
Stands for Digital Subscriber Line Access Multiplexer.
It is used to multiplex the analog signal from telephone & multiplex this signal to digital signal & provide the networking for the internet in PC’s as well as telephone lines.
By this existing telephone lines are used for extending internet (LAN) as well as PSTN.
Switch
It is a L-2 device into which we can connect all devices on a local network so that they can communicate together.
It can be of various ports like 4/8/16/24/32.
LAN Extender
LAN Extender is a device that use to extend the local area network beyond 100 meters through the copper cable.
Generally speed-2Mbps,Dist: 3-5Km
If distance is more then speed will be reduced according to company manual