Answer:
The following are the answer to the given points:
Explanation:
In point (a):
Calculating the long-distance call cost:

Calculating the local call cost:

Calculating the overall cost of PSTN:

In point (b):
Calculating the call rate per second and the average arrival rate:

The call average length:
The complete agent number:

The strength of traffic:
The occupancy of the agent:

Calculation of obtained:

We get = 0.329 to substitute values.
In point (c):
The rate of blocking = 
average call time 

In point (d):
Calculating the number of link, which is required:
In point (e):
Calculating the Line Number:
PSTN line number:

In point (f):
The gross design expense = $ 2309. 5
<h2>Start</h2>
The rectangle shape in flowchart is used to capture process steps like basic tasks or actions in your process.
The words, the computer is the future, has 64 bits.Modern computer has
two types of processors which include:
<h3>Bits</h3>
This is referred to as the smallest unit of data which is used in a computer.
The 32 bit computer are the old types which have a smaller processor and is
relatively slow.
The 64 bit computer on the other hand are the modern types with large
processors and are relatively fast.
Read more about Computer here brainly.com/question/13380788
It really depends on the type of app. There are lots of free pieces of software but distribution is expensive.
Android - $20 one time fee
IOS - $99 per year
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