I dont think they will introduce 1gbps speed pan indian wise anytime soon since it requres the upgrading of their local switching centres and increasing its capacity which according to me is nearly impossible given the current financial conditon of BSNL
BSNL can't pay their own employees salaries on time let alone the local vendors in charge of FTTH. Mine hasn't been paid for 10 months apparently. No way they will invest in upgrading their backend to support 1 Gbps. So, I'm just grateful they are able to provide the speed as advertised and the service is running as of now. No Airtel or other ISPs in my area which really sucks.
Their daily FUP on FTTH is a load of rubbish. Only one plan in Bangalore Circle which is not on daily FUP. 150 Mbps upto 1.5 TB.
They won't be able to provide gigabit speeds anytime soon. Their infra isn't ready for gigabit speeds. Sure, they have the capacity to provide gigabit. But in most of the BSNL exchanges they are using 100Mbps OLTs except a few exchanges. Only LCOs are using gigabit OLTs. And if the connection is being provided through LCO, gigabit speeds are out of the question. LCOs are provided with 2-3 gigabit fibre ports with link aggregation in my area. So unless they upgrade it to QSFP or better they won't be able to satisfy bandwidth requirements. Being a PSU has it's own perks. But infrastructure upgrade is not one of them.
Also some users reported they are getting more than the advertised speed. That's due to the bufferbloating in routers. If your router/ap supports disabling buffer bloat will help you to see the actual spped. Download a youtube video, then you will see your actual speed. Maybe it might spike for an instant, but will go back to your advertised speed.
I hope they wiil increase the speed of their minimum fiber plans to 100mbps and provide higher speeds in the high cost bracket as 200mbps, 300mbps instead of providing gigabit speeds which is not much worth for a normal home customer.
1 Gbps isn't common in the West. People are mostly happy with 100-300 Mbps in the West. 1 Gbps is widely available but most households won't be able to saturate that connection speeds. It's mostly a wastage of bandwidth.