Wall for Pranavpurkar

may be

don't knw about that! may be the total network that our service provider is providing are all occupied for that particular time duration.

can you explain sometime when we call someone then we receiv ALL NETWORK ARE CURRENTLY BUSY means?

yes that's why Tp is neglected.

yes packet switching switching is for small msg like ek phone call me jo baat hogi wo data kitna hi jada hoga so packet switchin is used in phone call

gate vidyalaya rbr ko refer krta h shi h good

While calculating the total time, we often ignore the propagation delay.
The reason is in packet switching, transmission delay dominates over propagation delay.
This is because each packet is transmitted over the link at each hop.

refer this :
https://www.gatevidyalay.com/packet-switching-switching-in-computer-networks/#:~:text=While%20calculating%20the%20total%20time,the%20link%20at%20each%20hop.

actually virtual circuit switching combines the power of both packet switching and circuit switching .
(similar to datagram ckt packet switching and virtual packet switching resp.)

okay got it . yes there are two types in packet switching (virtual and datagram). I think because of small msgs only but not sure now!

no any difference