Integrated Service Digital Network Instructor Mr. Dutikrushna Panda By Srikrushna Patro Roll # IT20017297 National Institute of Science & Technology Integrated.

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Presentation transcript:

Integrated Service Digital Network Instructor Mr. Dutikrushna Panda By Srikrushna Patro Roll # IT National Institute of Science & Technology 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] National Institute of Science & Technology 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 [2] National Institute of Science & Technology 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 Mbps in Europe Mbps [3] National Institute of Science & Technology Integrated Service Digital Network Srikrushna Patro

ISDN Advantages Increased productivity and accessibility Two phone numbers on a single line Speed Multiple Devices Signaling [4] National Institute of Science & Technology 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] National Institute of Science & Technology Integrated Service Digital Network Srikrushna Patro

ISDN Protocol Structure [6] National Institute of Science & Technology 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] National Institute of Science & Technology Integrated Service Digital Network Srikrushna Patro

Typical ISDN Network [8] National Institute of Science & Technology 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] National Institute of Science & Technology Integrated Service Digital Network Srikrushna Patro

THANK YOU [10] National Institute of Science & Technology Integrated Service Digital Network Srikrushna Patro