I purchased this product very recently with lots of expectations, unfortunately BSNL voice does not work at all in this product. The service provider tried configuring it several times and it lasts only for few hours post which, it says "number not registered. Moreover, we are not able to hear anything while answering the landline calls, and the call bell continously rings despite we disconnecting the call.

Currently, only Internet works fine and voice is not working. I really need some help to torubleshoot this issue from TP Link and ensure that voice is configured along with Internet on my device.