WAN TYPES

1:DEDICATED
EXAMPLE:LEASED LINES
ONE TO ONE CONNECTION ,NO BANDWIDTH DIVIDATIONS
ONE TIME PAYMENT/YEARLY/QUATERLY
EXPENSIVE LINE
HIGH SPEEDS :NORMALLY 54Mbps
24HRS/365 DAYS CONNECTED
NO NEED TO STOP,IF NOT USED
DEDICATED BANDWIDTH IS PROVIDED BY ISP .


2:CIRCUIT SWITCHED
EXAMPLE:TELEPHONE LINES,ISDN,DIAL-UPS
INEXPENSIVE LINES
HANG-UP WHEN FINISHED DATA TRANSMITTED.
LOW BANDWIDTH :NORMALLY 64Kbps-128Kbps
CONNECT-----USE-------DISCONNECT
USED ONLY WHEN LEASED LINE ARE DOWN(BACKUP LINE)
NO DEDICATED BANDWIDTH IS PROVIDED BY ISP .

3: PACKET SWITCHED
EXAMPLE:FRAME-RELAY

MODERATE EXPENSES
WORKS LIKE LEASED LINE
NO DEDICATED,LOOKS DEDICATED (365 DAYS/24 HRS CONNECTIVITY)
BANDWIDTH IS SHARABLE, NOT DEDICATED,SO IF NOT A PEAK HRS ,ENJOY THE FULL BADWIDTH OF ALL USERS LIKE LEASED LINE.
MOST POPULAR METHOD YET