Brindavan Express - ರೈಲು ಹೆಸರು ಬೃಂದಾವನ್ ,ಇದು ಯಾವಾಗಲೂ Number 1 - Vijay Baradwaj

Telescopic Ticket Query:
This april (2016), I'm planning for a journey from TVC-SVDK.
Journey breakup:
TVC- NDLS - KERALA SMPRK KRANTI (3A)
NDLS- SVDK - UTTR SMPRK KRANTI (3A)
SVDK-NDLS...
more...

- UTTR SMPRK KRANTI / SHRIMATA VD EXP (3A)
NDLS-GJL - INTERCITY (CC)
GJL-NDLS - INTERCITY (CC)
NDLS-TVC - KERALA SMRK KRANTI (3A)
What I want to know:
1. Can I avail for Telescopic tickets ( maybe not for NDLS-GJL journeys) ?
2. How can I get them? Is it same as "onward journey" mentioned in PRS forms?
3. Can anyone calculate and tell me what would be rates for telescopic tickets ( Class mentioned in brackets)
I have done calculation for point to point , for 2 adults and 1 kid ( though i considered as 3 tickets, as journey will be in april), Total fare for above trip is Rs. 22020/-. Does telescopic ticket will reduce this figure significantly??