Introduction
The 2.5 Gbps links between Mumbai and Europe (GEANT Madrid PoP), and Mumbai and TEIN3 Singapore PoP became operational in February 2010.
Impact
Looking at traceroutes from pinger.slac.stanford.edu it appears that:
pinger.cdacmumbai.in and sanchar.ncb.ernet.in are connected via TEIN3
While netops.cdac.in, sfsmds2.vsnl.net, mail.prl.res.in, www.cgg.gov.in (right now www.sify.com is returning Unknown host) are connected via TeleGlobe which does not appear to go through TEIN3.