How to setup both Internet & SIP on same WiFi

I actually mailed the modem company for help or external firmware to be flashed and they replied

Dear Thushar,
You said that third party softwares working fine with SIP calls in your Mobiles So that's clear it's not our device issue.
Maybe You can check with Mobile companies that this particular calling feature in their android mobiles support through wifi.


Thanks & Regards
Aby Varghese
 
@shruti static routing if used here to manually configure the route to access the voip gateway. You need to add a new route to the routing table in networking. You can usually find this menu in network>router>static route. You can click on show route to see all your routes.
Before adding a static route you need to know the gateway of VoIP. Your can find it in network status menu where both gateway of internet and voice can be seen.
Copy the gateway number. And add a static route in the same network>router>static menu.
Use destination network (destnet) 10.0.0.0
Subnet mask 255.0.0.0
Gateway <copied>
Metric 1
Interface nas_01
And add route.
Restart your router.
 
I have two wifi 1 for internet and 1 for call I am using gs wave I want call and internet on same wifi network
 
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