What is the project name of 1rupee coin phone
How it works
What type of display is used in it
Give circuit explaination

how it works and what is the payment system of call logs.
where we have to pay for that

working principle of one rupee coin phone

Test cases for one Rupees Coin Box (Telephone box)

Positive test cases:


TC1: Pick up the Handset
Expected: Should display the message “Insert one rupee coin"
TC2: Insert the coin
Expected: Should display the message “Dial the Number"
TC3: When you get a busy tone, hang-up the receiver
Expected: The inserted one rupee coin comes out of the exit door.
TC4: Finish off the conversation and hang-up the receiver
Expected: The inserted coin should not come out.
TC5: During the conversation, in case of a local call, (assume the duration is of 60 sec), when 45 as are completed
Expected: It should prompt you to insert another coin to continue by giving beeps.
TC6: In the above scenario, if another coin is inserted
Expected: 60 sec will be added to the counter.
TC7: In the TC5 scenario, if you don't insert one more coin.
Expected: The call gets ended.
TC8: Pick up the receiver. Insert appropriate one rupee coin; Dial the number after hearing the ring tone. Assume it got connected and you are getting the ring tone. Immediately you end up the call.
Expected: The inserted one rupee coin comes out of the exit door.