Topic 5 Introduction of Network Engineering. Two fundamental issues. In network there are many ways to and from a node. So need the switch in the node for selecting the output way go to destination.
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The circuited switching maintains continuously a path for a dedicated call. The packet switching serves different calls in a path by mean of packets (no focus in this subject)
In a local area the calls traverse no more than one switch. Other calls destined for subscribers outside local area traverse a tandem or transit switches to another local switch.
contact is made by a horizontal and vertical relay
2 x 10 x (100 x 10) + 100 x 100 = 30000 cross points
whereas a single-stage switch require
analog this inter-
for each time slot
Traffic A=3.10 minut/60minut=0.5 Erlan
How many trunks do need in the tie line route?
How many trunks do I need in the tie line route?
But there are 2 x E1 trunk route (60 channels) on my call centre carrying 51.806E.
Should the incoming route be sufficient to meet my Service Level Objective.