I plan to implement a VOIP client for openwrt, and for that I want to analyze the traffic that comes out of an H300s router. What I want to achieve is to make a compartible VOIP client for my ISP that i able to connect to ISP.
In other words I want somehow to use a OpenWrt router as a cheap DSLAM, so I can analyze and replicate the settings that ISP has for voip using my computer. So I can keep on developing without needing to sacrifice my VDSL connection.
What I actually want is somehow to demodulate the VDSL traffic, so I can sniff the nessesary traffic that router generates to a specific VLAN. Is there a way where I can repurpose an Old VDSL router as DSLAM?
Single-line devices implementing the carrier-office part of VDSL2 exist, so you don't need an entire DSLAM. I mentioned a few examples in a similar thread, but note that compatibility may be an issue.
However, since the device mentioned in your first post also has an Ethernet WAN port: Have you tried configuring it to use that port (with an external modem)? If that is possible, it would be a much easier way to sniff WAN traffic.
The ethernet port usually is used to convert the H300s into a vdsl modem so you can piggybag another router. The firmware is locked and in my case I want to reverse-engineer the connections that H300-s does.
So I need the other way around having my own way to emulate the ISP traffic from my computer.
But to be honest I have not done it or I have no idea how I can make H300s to use the ethernet port for WAN. That would aid me a lot for the reverse-engineering.