I had a query in PTP Transparent Clock(TC), Please consider the below picture for my question.
I will try to express my question with the help of a real world example
Say, two places Place_A <-----|Toll_Plaza|------> Place_B
Assume time taken to travel from Place_A to Place_B is x minutes (which includes the time taken at Toll_Plaza).
Just imagine the same thing happening with the Transparent clock in PTP Synchronization, a TC just calculates the residence taken at a device and modifies the correction field and forwards the packet to the other device.
It anyways time taken will be same irrespective of TC existence from a Peer to Peer.
How come it helps in having right accuracy? What is the real purpose in introducing a TC in IEEE 1588v2?
Any explanation will be helpful and welcome. Thanks in Advance !!!