Can't call from Jio mobile to Bsnl fiber landline

[Notorious]

Yesterday bsnl fiber was installed at my parents house through lco. Can't make calls to bsnl from my jio network. Calls work from bsnl to jio.
As per lco it is a common issue. (punjab circle).

Is this common? any solution?

 

[SVK]

What happens when you try to call BSNL Landline? Getting Subscriber busy message?

Few weeks back I was calling hospital's landline number through Jio number. I was constatntly getting Subscriber busy message for 10 min. I thought number would be really busy as many people call at that time for appointment. Later I tried calling from Airtel, and call was connected immediately. So not sure if its indeed Jio issue, or indeed phone was busy.

 

[Notorious]

Bsnl landline works fine. Problem is Voip calls on bsnl ftth.

 

[!!..PD..!!]

For me STD incoming was not working on the bsnl ftth landline.

The Voice setting was STATIC that time.

Now I've Voice setting at DHCP and no longer facing this issue.