How to configure Grandstream VoIP GRP2601P with BSNL FTTH

[amohan78]

I have successfully bridged the VoIP VLAN to my router and one of the LAN ports is now giving the VoIP IP Address. BSNL VoIP is based on DHCP unlike Airtel which is based on Statis IP.

Now I want to connect a IP Phone like Grandstream 2601 to that LAN port and more away from my analog FXS based system. In BSNL Telephony configuration, the Outbound Proxy URL and Port are mandatory, and Outbound Proxy needs to be enabled. I was about to purchase this model.

before that I thought of looking at some configuration videos and I saw that the SIP registration page does not have explicit fields to mention the port of the outbound proxy. BSNL has a Proxy Address URL like wb.ftth.bsnl.in and a port like 5080 along with it. Nowhere I find that the port number field is present.

Has anyone connected a IP Phone with BSNL FTTH and can anyone let me know how you have dealt with the Grandstream VoIP phone configuration ?

 

[tr1k0N4]

Brdr, Grandstream IP Phones do have an Outbound Proxy field. However, no Outbound Proxy port field is there.
And for using an IP Phone with BSNL, you have to set the time manually.
If you are willing to make that sacrifice, it should work just fine for you!

 

[hariselio]

i think you need enter with port number like, wb.ftth.bsnl.in:5080

 

[amohan78]

@tr1k0N4
On a side note, this reminds me of a strange thing with BSNL. I have a dual WAN set up in Microtik Hex S (2025 model) with recursive routing. And BSNL is my ISP 1 in Microtik. But oddly though, it will not be able to become a NTP client. Reason being when BSNL was connected to Microtik (from my TP-Link ER605) as a DHCP client, the use Peer NTP was ticked on. In case of BSNL, there is no NTP server rendered. But in case of Jio or Airtel , they have a NTP server defined which can be used by Microtik as a NTP client. ANd even if I ask Microtik to use time.google.com, it will get stopped by BSNL. So I am forced to use the NTP Server that Jio has rendered on the Microtik when I connected Jio as DHCP client on Port 2 of Microtik Hex S. I am not sure why BSNL would not render the NTP server.

I think , that is why in Grandstream IP Phone, the NTP client in Grandstream is unable to get the NTP server from where it can download the clock. Why is why you observe that the clock needs to be set up manually

 

[amohan78]

@hariselio
Yes I agree that is the nearest possibility. I am not able to understand if I should buy the Grandstream model or not. In YouTube, there is a channel named Geeky Twins and they have bought this model. I am waiting for the configuration video. They have also made a video on Yealink IP Phones where I have seen that there are dedicated fields to input the port number

 

[tr1k0N4]

While I agree that BSNL has some issues with NTP servers as reported by multiple folks, it wasn't the basis of my statement when I said you'd have to set the time manually.
I said that because if you wish to use an IP Phone reliably with BSNL, you'd have to connect it directly to a port with Voice VLAN tagged, so that the IP Phone would dynamically get the IP and you won't need to set up/update any static routes in your router. For more clarity, you can refer to the Yealink-Airtel Xstream video by Geeky Twins wherein they tag the Voice VLAN to port 4 and then connect the IP Phone to that port after setting up the SIP account in it.

 

[amohan78]

@tr1k0N4
Yes I got your point now. I have been able to isolate the Voice VLAN in my TP-Link ER605 to Port# 2 by using the menu of IPTV. I will hook the Ethernet cable in that port and then to my IP Phone after configuring the same.

 

[hariselio]

@amohan78 Check page no 5/6 on this document about port number config, https://www.grandstream.com/hubfs/Product_Documentation/GRP2600_Server_Redundancy.pdf

 

[amohan78]

@hariselio
Awesome Awesome ! Beautiful Guide. It makes things so very clear now. !

 

[tr1k0N4]

It is indeed very helpful! Thanks brdr @hariselio !