Help In Configuring My BSNL FTTH With Netlink ONT

[boimwong]

I need some help on this matter. First of all I may not in correct subject.

1. I forgot my Netlink ONT router admin credentials. How to get it? if reset is the only option I am I need to reconfigure.
2. I need to use dd-wrt Linksys router by putting Netlink in bridge mode.
3. I have to forward the voice to my mobile phone when I am not inside same network using zero-tier