Typical, day at Tata like any other company will vary for different roles. In my role, the mornings were super busy, with meetings from off shore teams, before rest of the team left for home.
The management is cognizant of this fact, and is very open to working remotely.
This is very typical of large organizations, so no different at Tata, silo'ed organizations, lack cross communication, sadly, at times try to re-invent the wheel.
The best part of the organization are the colleagues working here, they are truly the prized assets. For the most part Tata Communications looks after them.