I using Huawei modem.

This will forward all ports to specific IP.  I've done it.  Waiting Maxis to provide me Public IP.
http://npr.me.uk/forwardports.html

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Added on July 15, 2012, 12:20 am

This is what I had done so far.  Do suggest all possible settings to make it success.

Good news, Internet is working already.  Now testing VoIP.
Here is the settings for Shibby's Tomato Firmware for Asus RT-N16.

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Added on July 17, 2012, 12:37 amjssc,
Need some clarification from you.
Your Thomson router connections is it Thomson WAN port connect to your TP-Link Port1 or Port2?
Can you let me know which Thomson LED lights is on and what are the colour?

Thanks.

Guys, does your internet get disconnected randomly?
Mine does like no internet for few mins, then back to normal.
Check the Thomson router and all lights are green. Internet and LAN green blinking.
Wonder those using 3rd party router encountering same issue or not.

the only benefit is u get better wifi experience than using the wifi from the thomson router. Remember if you are doing this method please off the wifi function on the thomson router, just let your custom router to handle all the wifi function.
and i believe by doing this the thomson router will be litter bit more stable because less workload less heat.

https://forum.lowyat.net/topic/2441911
you can see from this thread that thomson router gives very bad latency
i seriously dun think that it is worth to do a connection like that 

I found out that there is a limitation on Tomato firmware where you can't tag the WAN PPPoE dialer to VLAN 621.

http://klseet.com/index.php/asus/asus-rt-n...rt-new-ui-setup
something that you might wanna try
good luck

[attachmentid=2978952]
does this page contains other setting for you to insert vlan setting yourself

until which step it does not work

refer to the image
[attachmentid=2978967]
did you connect to the correct port after you input the custom vlan which is 621 for internet.

Hhmm. Guys. I'd like to confirm 1 thing on this.

1) Maxis uses 2 diff Vlan ID for HSI
      Those using TM Modem (Vlan Tag is 621)
      Those using Modem provided by Maxis (Vlan Tag is 11) [The following setting is based on this]
Please refer to Attachment. This is a Thomson Config file i've downloaded for backup.


Also I'd like to share my experience using TPLink 1043ND router with Huawei Echolife HG8240 & Thomson (mainly for VoIP)

All Vlan Tagging are done on the TPlink router hence there is no need to configure the Echolife HG8240. *I'd like to point out that not everyone is done in this manner, hence please check before following the guide.

This is how my wiring setup

This is how i've configure the Switch & Vlan Tagging Setting (Under Network --> Switch)

I also like to highlight that Port 1 in the image is WAN port, Port 2 is Eth 1 ... Port 5 is Eth 4
For my case i used Eth 4 hence is port 5. Take note on the Vlan ID 1 under Port 5 change it to off. Add Vlan ID 11 and change Port 5 to "Tagged" & CPU to "Tagged"

then save & apply

This is the WAN Setting (Under Network -- > Interface --> WAN)

Change the setting to VLAN Interface eth0.11

then save & apply

Then under General Setup  (Under Network -- > Interface --> WAN)
Change protocol to PPPOE
enter username xxxxx@home.maxis.com.my or xxxxx@public.maxis.com.my
password is usually the xxxxx1 (where xxxxx represents the 5 digit before @home.maxis)

Save & apply..
You are done

wiind, no prob , glad to share my experience.

Some of these settings are also done with the help from Tanghm, as I've bounce couple of ideas with him and he helped me in a few areas.

1) you need to figure out the Admin login for the Thomson router.

Username : Administrator (*take note it is case sensitive. make sure it is capital A)
Password : <access key> at the back of your router label.

2) Then login using the Administrator account
3) On the Thomson Gateway menu, click Configuration.
4) In the Pick a task list, click Save or Restore Configuration.
5) Under Backup current configuration, click Backup Configuration Now.
6) The Thomson Gateway prompts you to save your backup file.
7) Save your file to a location of your choice.
8) use text editor to open the file.