Telecommunication Engineering — Winter 2021

Compare single stage and multi stage networks.

Discuss operations of load sharing mode of stored program control.

Explain centralized SPC and also explain the drawback of it.

An exchange serves 4000 subscribers. If the average BHCA is 24000 and the CCR is 50%, calculate the busy hour calling rate.

Discuss operations of synchronous duplex mode of stored program control.

Explain level 1 processing and level 2 processing of distributed SPC in detail.

Explain Numbering plan for Telecommunication in detail.

Calculate the number of trunks that can be supported on a time multiplexed space switch, given that: (1) 64 channels are multiplexed in each stream ; (2) Control memory access time is 50 ns ; (3) Bus switching and transfer time is 50 ns per transfer.

Discuss operations of standby mode of stored program control.

List charging plans for Telecommunication and discuss any two.

Agroup of 40 servers carry a traffic of 20 Erlangs. If the average duration of a call is five minutes, calculate the number of calls put through by a single server and the group as a whole in a one hour period.

Explain input controlled time division space switch.

Explain the N Х Nthree stage switching network. Draw the Lee’s graph to discuss its blocking probability.

Asubscribe makes three phone calls of three minutes, four minutes and two minutes duration in a one hour period. Calculate the subscriber traffic in Erlangs, CCS and CM.

Define: Erlang, CCR , BHCA, Grade of service.

Draw and Explain the basic scheme for common channel signaling.

Describe Right-through routing.

Explain subscriber loop system.

Discuss the architecture of signaling system No.7 (SS7).1

Discuss circuit switching in brief.

Explain three-party conferencing connection.

Describe fiber optic networks in detail.

Discuss packet switching in brief.

Compare in band and out band Signaling.

Describe satellite based data networks in detail.