A …………………… Fire Alarm System
B …………………… Building Automation System
C …………………… Auto Fare Collection
D …………………… Open Transport Network
F …………………… Automatic Train Control
G …………………… Automatic Train Operation
H …………………… Network Management Protocol
I …………………… Operated Control Center
J …………………… Human Machine Intece
K …………………… Application Programming Intece
L …………………… Ministry of Construction
M …………………… Transmission Control Protocol/Internet Protocol
N …………………… Uninterruptible Power Supply
O …………………… Mean Time Between Failure
P …………………… Mean Time To Repair
Q …………………… Local Area Network
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