Confirm IPTV can work with the same way as above for internet. I now have internet on LAN 3 and IPTV on LAN 4

Only observation is that the HG655a modem may appear to hang and the GUI turns unresponsive after pressing "Submit" when changing the port for ptm1.600. The setting that was made would be retained however after a power cycle.

You may also need to power cycle the IPTV box if it doesn't detect the changes.

Thanks lighter for making this finding. TM's DIR-615 is now removed from my set up, saving some electricity and making the planet a little greener

yes, do able.
u have to route the iptv vlan inside the HG modem.
but i think it will load the modem..
dont know about others, but my modem HG655a do run hot.. 

My IPTV doesn't work despite following exactly what the guide says, any idea what went wrong?

OK, did the same for VLAN600 as for VLAN500, VLAN600 now on Port 2 (Port 4 doesn't work), and everything works!
Thank you for the guidance, cool!

I was playing with vlan setting last night and now I can connect my IPTV directly to the Huawei HG655a. Thanks everyone for the guides.

Hi Lighter,

Thanks for the guide I managed to get into the home gateway and reconfig the port for my own router. However, upon testing for the STB it didn't work when I directly connect it's LAN cable on LAN1 of the home gateway. I just noticed that during the STB's startup it fails to get an IP addresss (the startup part where we see a yellow progress bar).

Any ideas how it can be fixed?

Thanks again for the guide. Accessing the gateway is a big help.

I am trying to remember as I do not have the HG655a anymore...

Do exactly for ptm1.600 as you did for ptm1.500.

Make sure that the port binding for ptm1.600 is to a different port compared to ptm1.500 as you did for your internet.

For example.. if ptm1.500 is set to LAN 3, set ptm1.600 to LAN 4 only. Both ptm1.500 and ptm1.600 should not be binded to the same LAN port.

Turn off VLAN tagging as well for ptm1.600