@PrakashSankar I already sent a request to support.in@tp-link.com before even this thread was created, but there was no response from them. If possible, can you share the firmware with...

@David-TP Do we have any update on this? We are not able to use this router with BSNL ISP. @PrakashSankar

@NarenderLuthra yes, After connect to Pon cable. It automatically switched to EPON. Thanks, chinna

@David-TP Sorry David, it was a typo, I was referring to https://www.amazon.in/Digisol-DG-GR1321-300Mbps-Wi-Fi-Router/dp/B07R8LGM45 router. With this router we are able to connect both broadband and...

@PrakashSankar I am also facing exact same problem with XC220 router. Unable to register to "tn-ftth-ims-bsnl-in" SIP proxy with valid credentials. Same works fine in DSL routers.

@ManojAgrawal Let me know if you received new firmware from TPLink support. There is some issues with my router firmware as well, unable to switch between GPON to EPON.