Integrated Service Digital Network Instructor Mr. Dutikrushna Panda By Srikrushna Patro Roll #...
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Integrated Service Digital Netwo Instructor Mr. Dutikrushna Panda By Srikrushna Patro Roll # IT20017297 National Institute of Science & Technology Integrated Service Digital Network Srikrushna Patro
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Transcript of Integrated Service Digital Network Instructor Mr. Dutikrushna Panda By Srikrushna Patro Roll #...
Integrated Service Digital Network
Instructor
Mr. Dutikrushna Panda
By
Srikrushna Patro Roll # IT20017297
Nati
onal In
stit
ute
of
Sci
en
ce &
Tech
nolo
gy
Integrated Service Digital Network
Srikrushna Patro
Integrated Service Digital Network
ISDN Introduction
ISDN Services
ISDN Advantages
ISDN Evolution
ISDN Protocol Structure
Typical ISDN Network
Conclusion
[1]
Nati
onal In
stit
ute
of
Sci
en
ce &
Tech
nolo
gy
Integrated Service Digital Network
Srikrushna Patro
ISDN Introduction
• Stands for Integrated Services Digital Network allows voice and data using end-to-end digital connectivity .
• Basic component is channel,it supports 3types of channels(B,D,H).
• Kilo means 1000 not 1024.
[2]
Nati
onal In
stit
ute
of
Sci
en
ce &
Tech
nolo
gy
Integrated Service Digital Network
Srikrushna Patro
ISDN Services
• BRI and PRI services.• The ISDN Basic Rate Interface (BRI)
service offers two B channels and one D channel , bit rate 192 kbps.
• ISDN Primary Rate Interface (PRI) service offers 23 B channels and 1 D channel,bit rate in America 1.544 Mbps in Europe 2.048 Mbps
[3]
Nati
onal In
stit
ute
of
Sci
en
ce &
Tech
nolo
gy
Integrated Service Digital Network
Srikrushna Patro
ISDN Advantages
• Increased productivity and accessibility
• Two phone numbers on a single line
• Speed
• Multiple Devices
• Signaling
[4]
Nati
onal In
stit
ute
of
Sci
en
ce &
Tech
nolo
gy
Integrated Service Digital Network
Srikrushna Patro
ISDN Evolution
• First the network was all-analogue and voice-centric
• Digital transmission (PDH) in the core network • Digital switching at 64 obit/s• SS7 replaces channel associated signaling
systems • SDH replaces PDH • ISDN offers digital technology to end users • DSL (primarily ADSL) technology takes over
[5]
Nati
onal In
stit
ute
of
Sci
en
ce &
Tech
nolo
gy
Integrated Service Digital Network
Srikrushna Patro
ISDN Protocol Structure
[6]
Nati
onal In
stit
ute
of
Sci
en
ce &
Tech
nolo
gy
Integrated Service Digital Network
Srikrushna Patro
ISDN Protocol Structure
• Protocol discriminator - The protocol used to encode the remainder of the Layer.
• Length of call reference value - Defines the length of the next field.
• Flag - Set to zero for messages sent by the party that allocated the call reference value; otherwise set to one.
• Call reference value - An arbitrary value that is allocated for the duration of the specific session, which identifies the call between the device maintaining the call and the ISDN switch.
• Message type - Defines the primary purpose of the frame.
[7]
Nati
onal In
stit
ute
of
Sci
en
ce &
Tech
nolo
gy
Integrated Service Digital Network
Srikrushna Patro
Typical ISDN Network
[8]
Nati
onal In
stit
ute
of
Sci
en
ce &
Tech
nolo
gy
Integrated Service Digital Network
Srikrushna Patro
Conclusion
• ISDN is replacing our old analog phones and offers a lot of new services.
• Easy way to transmit voice and data simultaneously at the same time using advantages of a digital communication.
• Due to its easy accessibility it is widely
used.
[9]
Nati
onal In
stit
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of
Sci
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ce &
Tech
nolo
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Integrated Service Digital Network
Srikrushna Patro
THANK YOU
[10]
Nat
iona
l Ins
titut
e of
Sci
ence
& T
echn
olog
yIntegrated Service Digital Network
Srikrushna Patro
