Describe the flow control and load sharing features implemented in the MTP3 protocol of SS7. Explain the use of the SLS field and discuss SS7 network structure. Explain the error control mechanisms used in SS7, including preventive cyclic retransmission. Draw a diagram for the protocol model of SS7 and explain the function of each part. List the four classes of SCCP service which are available and explain one briefly. Describe the advantages and disadvantages of common channel signalling. Describe in detail the function of MTP layer 1, 2 and 3. Show the structure of message signal units (MSUS) and describe the fields used. Describe the call control procedures used in DSSI to set up and release a connection. Use a diagram to show the signalling message flows. Give details of three examples of supplementary services provided by the ISDN user part of SS7. Describe a service provided by the transaction capabilities application part. Describe the subscriber line signalling methods used for analog telephony. Explain how channel associated signalling was performed using PCM multi-frames, multi tone and d.c methods. Describe the structure of ATM signalling message at the user network interface (UNI). Give example of the information elements available and how they may be used to set up connection. Define meta-signalling and explain it is use. Describe the function of the SAAL and its SSCOP sublayer. Draw the protocol layer diagram for ATM signalling and explain how it can operate over an SS7 network.
Describe the flow control and load sharing features implemented in the MTP3 protocol of SS7. Explain the use of the SLS field and discuss SS7 network structure. Explain the error control mechanisms used in SS7, including preventive cyclic retransmission. Draw a diagram for the protocol model of SS7 and explain the function of each part. List the four classes of SCCP service which are available and explain one briefly. Describe the advantages and disadvantages of common channel signalling. Describe in detail the function of MTP layer 1, 2 and 3. Show the structure of message signal units (MSUS) and describe the fields used. Describe the call control procedures used in DSSI to set up and release a connection. Use a diagram to show the signalling message flows. Give details of three examples of supplementary services provided by the ISDN user part of SS7. Describe a service provided by the transaction capabilities application part. Describe the subscriber line signalling methods used for analog telephony. Explain how channel associated signalling was performed using PCM multi-frames, multi tone and d.c methods. Describe the structure of ATM signalling message at the user network interface (UNI). Give example of the information elements available and how they may be used to set up connection. Define meta-signalling and explain it is use. Describe the function of the SAAL and its SSCOP sublayer. Draw the protocol layer diagram for ATM signalling and explain how it can operate over an SS7 network.
Chapter25: Television, Telephone, And Low-voltage Signal Systems
Section25.1: Television Circuit
Problem 15R
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