Researching on the interwebs on the topic of setting up a custom router (non-maxis issued) with the Maxis Fiber service yields several guides that are outdated, inaccurate, ambiguous, in long forum threads or lacking on all the key details. This post to shed light on key piece of information for custom router configs.

Long story short, I managed to get Maxis Fiber working with my custom router with VoIP after getting some help from a friend at Maxis (Thank you!).

First and foremost, if you intend/plan to use your own router:

IEEE 802.1Q or commonly refered to as VLAN tagging, hardware support is required.

The key essentials:

VLAN VID `621` #for internet (PPPoE)
         `821` and `822` #for VoIP/SIP, BOTH is required to work

I used the Asus RT-AC66U router running the Tomato firmware (v1.28.0510.6 MIPSR2Toastman-RT-AC K26AC USB VPN) for the Maxis Fiber (FTTH) service in a TM/Unifi (HSBB) area.

The details: Here’s how it connects physically, the ethernet connection out of LAN2 (standard for UniFi/HSBB configured networks) from the optical network termination, (ONT), aka fiber modem, eg. Huawei EchoLife HG8240w; connects to the WAN port of the custom router. The custom router handles the internet connecting via PPPoE using the Maxis provided username and password.

(optional) Should want to use the VoIP service provided, tagging traffic on a LAN port (of your choosing) and the WAN port on your router with vlan id 821, 822. This allows the VoIP traffic to pass between LAN port and the WAN port, and no where else. I used the Maxis issued Technicolor TG784nv3 router to handle the VoIP connection. The Maxis router’s WAN is plugged into the designated LAN that you have chosen. No additional configuration is needed in the part of the Maxis issued router, the modem as configured by the service technician will work fine.

Advanced VLAN setting in tomato's webUI

Notes: In this version of tomato, the ethernet ports on the VLAN page is numbered in reverse in firmware from the physical markings on the router. (eg. plugged physical ethernet cable into LAN4 port on the router, configure for the LAN1 port on the VLAN page as in image above).

EDIT (June 2017): recieved email on the post w/ question on the set up. Hence, the voip setion was edited for clarity/simplification.

EDIT (Jan 2018) Post reorder.

PS: I’ve upgraded from the tomato router to an EdgeRouter X, perhaps I’ll post an updated config for the ERX for maxis in a future post.