Test cases for Telephone

Tc1
Action: check the interface of telephone , here interface means all buttons are available and should place on proper place.
Expected result: Interface of telephone is correct
Tc2
Action: check the functionality of each button like press the button redial
Expected result : all the buttons works properly.
TC 3
Action : check the volume level of phone
Expected result. volume level is available in the phone.
Tc4
Action : randomly enter the long number
Expected result : give some message like no is not valid
TC5
Action: check for the ringer
Expected result : Telephone have ringer tone.
TC6
Action: check for the dial tone
Expected result : telephone have dial tone
TC7:
check for the connection
TC8:
Check at the receiverside he receive the message properly or not.
1. To check connectivity of telephone line or cable
2. To check the modem to determine whether it is functioning or not
3. To check dial tone of the phone
4. To check the keypad while you dial any valid number on the phone
5. To check ring tone with it’s volume levels
6. To check voice of both sides (from and to) of the phone
7. To check display monitor if the phone has
8. To check redial option whether its functioning or not
10. To check the company standard of phone
11. To check the weight and color of the phone
12. To check loud speaker whether it is functioning or notany missing above then you can add any more test cases