It is sent to ensure that the receiver has received the frame correctly.
In the meantime the receiver receives packet numbers 5 and 6.
The correct time value will cause all of the signals that the receiver is receiving to align at a single point in space.
And the receiver receives the character, puts it in the dictionary.
That is, the sender will not continue until the receiver has received the message.
For example an audio receiver is receiving a bit stream of data.
Therefore the receiver must receive and calculate the time difference between a second pair of stations.
Thus, there are 2w different sequence numbers that the receiver can receive at any one time.
All receivers on board were receiving on various channels at the same time.
Hence the communicator must ensure that the receiver receives the same meaning.