Wan Technology:-
Metro
Ethernet
Characteristics:-
Ø A MAN Technology
Ø Based on Ethernet
Ø Typically uses Fiber Optics
v Advantages
Ø Easily Connect with LANs
Ø Less Expensive than Alternatives (like SONET)
v Speed
Ø 10 Gbps
Ø 40 Gbps
Ø 100 Gbps
VSAT
Very Small
Aperture terminal (VSAT):- A WAN Technology that uses small satellite dishes
installed at network locations for two-way communication via a Satellite
Characteristics
Ø Two-way satellite communication
Ø Satellite dishes is less than 3 meters
Ø Useful for location that cannot have wired internet
connection
Ø Data rates typically in the range of 56 Kbps – Mbps
Ø Data experience more Delay
Ø Sensitive to weather condition
Cellular 3G and 4G
Characteristics
Ø G = Generation
Ø Standards define by the International
Telecommunication Union Radio Communication Sector(ITU-R)
Ø Long Term Evolution (LTE) is commonly offered as a
“4G” Technology
Ø Can provide Internet access to Mobile and Stationary
Devices
MPLS
Multiprotocol
Label Switching (MPLS):- Makes forwarding Decisions based on 20-bit Label and
32-bit Header
ISDN
Integrated
Service Digital Network: - is a Digital Circuit Technology where a circuit is
divided into logical B Channel (which Carry Voice, Video, Data) and D Channel (which
carry Signaling Protocols)
BRI
|
PRI
|
|
B Channel
|
2 -64 Kbps
|
T1 = 23 - 64 Kbps
E1 = 30 - 64 Kbps
|
D Channel
|
1 – 16 Kbps
|
1 - 64 Kbps
|
Ø BRI (Basic Rate Interface):- An ISDN circuit that
contains two (64Kbps) B Channel and one (16 Kbps) D Channel
Ø PRI (Primary Rate Interface):- :- An ISDN circuit that
contains 23 (64Kbps) B Channel and One (64Kbps) D Channel on a T1, or 30Kbps
B Channel and one D Channel E1
Ø Q.921:- ISDN’s Layer 2 Signaling Protocols
Ø Q.931:-ISDN’s Layer 3 Signaling Protocols
very gud
ReplyDeletethank u bro
ReplyDeletewell
ReplyDeleteE1 uses 30 B channels plus 1D channel, 64K each. I presume it's a mistype but for sake of others and punctuality correct this.
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