Telephone

Both types of data and voice are communicated through the telephone line. Telephone contact system is widely used in almost all countries of the world.
This system is widely used. Telephone Digital signal transmission speed ranges from 1.2 kbps to 56 kbps. Telephone lines can be divided into two groups. Namely

1. Leased Line and.
   2 good dial up line Dial-up line is used for general telephones. In this case, the data is transferred through the telephone number to the computer and it is in good condition. The cost of this system is low. Regardless of the organization's own use of telephone lines, the line is called the line. User her It may be used intentionally. The telephone authority has to pay monthly for this type of line.

Image Source

would you like to add some points sir/Madam

So Please Comment,Upvote and follow me Dear sir/Madam