In the 13 feb 08 vsnl paper, the technical and hr rounds were combined.

They gave one data sheet to fill. Note: vsnl is now tata communications

The vsnl guys took 45 minutes for my tech hr interview.
The technical topics and questions were:
Networks
Rectifiers
Layers
Routers

Modes of transmission
Then some general knowledge questions like

Your opinion about special economic zones
West Bengal singur scene
Nano car
Fuel price rise
Who is the telecom minister? 
Minister of IT , Defence?
What are your strengths and weaknesses?
Your family background
Your target in life
Do you want to go for Higher studies

Correlate the terms supply and demand.

If demand is too high, then supply get short and price rise occurs.

That was a vsnl technical interview experience. See more vsnl technical hr interview papers, latest 2008 written exams for b.tech engineering electronics communications, electrical, programming interview questions and more.