Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Discuss grade of service. During busy hour, 1500 calls were offered to a group of trunks and 8 calls were lost. The average call duration was 120 seconds. Calculate the traffic offered, traffic lost, Grade of service and total duration of congestion.
(i) Grade of service: In loss systems, the traffic carried through the network is usually lower than the actual traffic offered to the network through the subscribers. The overload traffic is discarded and therefore it is not carried by the network. The amount of traffic discarded by the network is an index of the quality of the service offered through the network. It is termed Grade of Service (GOS) and is explained as the ratio of lost traffic to offered traffic. Offered traffic is the product of the average number of calls generated through the users and the average holding time per call. Therefore, GOS is given as
GOS = (A-A0)/A
Here
A= offered traffic A0 = carried traffic A-A0= lost traffic (ii) we know that
Traffic offered = A = Ch/T = (1500 x 2)/360 = 50 E
Traffic lost = (8 x 2)/(6/30) = (4 E)/15 = 0.26 E
Grade of service = Number of call lost/Number of calls offered
= 8/1500
Duration of congestion = Grade of service x 1 h
= (8 x 3600)/1500 = (96)/5 = 19.2 sec.
Explain Virtual Packets. The router can't transfer a copy of a frame from one kind of network to other since the frame formats be different. More significantly, the router cann
What is the difference between Synchronous and Asynchronous updates? A program asks the system to perform a particular task, and then either waits or doesn't wait for the task
Features of Supply Chain Management Supply Chain Management Consultancy's scope is extensive, and typically contains: 1. Sales order processing and customer service 2.
Write a function that will get a variable number of input arguments: the length and width of a rectangle, and possibly also the height of a box that has this rectangle as its base.
Q. How can we use Metropolitan Area Network? A MAN, essentially a bigger versions of a LAN is designed to extend over an entire city. It may be single network like a cable tele
Name the switching schemes used in a digital exchange? The several switching systems used are: 1. Strowger Switching System 2. Cross bar Switching. 3. Electronic Swit
An off-hook signal will repeat for a/an duration. For a/an finite duration, an off-hook signal will repeat.
What is Electronic Data Interchange? Electronic Data Interchange (EDI): It is used by organizations for transactions which arise on regular basis to a pre-found format.
What is actor? An actor is a direct external user of a system. Every actor shows objects that behave in a particular way towards systems. Actors are directly linked to system.
Give example of Real time (transaction) processing Using this illustration of booking seats on a flight, below sequence of events would occur: - Customer/travel agent conta
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd