Telecom lines are unreliable.In this case both the telecom lines failed at the same time.VSat is a much better connectivity from NSE to brokers and then brokers can connect to clients on internet lines. Cost of having a VSat line is hardly rs 10 K per month and most brokers can afford both telecom/internet and also VSat connectivity. If there was V Sat connectivity , the issue could have been much smaller. 10 years ago all brokers ( and also some large trader clients ) used to have VSat connectivity but these days internet is so cheap that brokers may not be having VSat connectivity .
My broker in Mumbai had allowed VSat connectivity to me and I used it for 5-6 years and there was not a single instance of connectivity failure. There were 2-3 instances of some software getting corrupt but it was resolved in 1-2 hours max. In past I had used leased lines also and leased line connectivity is at the mercy of road digging,the signal passing through multiple exchanges and the exchange staff maintaining the uptime of these lines etc
Smart_trade