• Hacking V2801F, TWCGPON657 & DFP-34X-2C2 to suite your ISP Fiber
• GPON market is a mess, plus explicit OMCI cause ONU Stick did not work
• 4-port ONU Emulation Table

1. Backup env, env2 & config partition ^{Guide by @tdmadam}
2. Setup XPON ONU SFP Stick
3. flash get, flash set
   • xPON Model Id
   • LAN SDS Mode
   • 2.5GbE Compatibility
4. Diagnostic
   • Hidden Link, Firmware Update
   • OMCI MIB INFO
   • OMCI VLAN
   • Wireshark ^{OMCI decoding for Wireshark by @tdmadam}
   • UART
5. TWCGPON657 × V2801F Firmware
6. V2801F Auto Reboot
7. Firmware Emulator

1. HSGQ @ Taobao Mall
2. Fibershow @ AliExpress

• Much cheaper than VSOL V2801F & CarlitoxxPro CPGOS03-0490 v2.0!
• Using latest SoC RTL9601D!
• Support HEX PLOAM Password! ^{Using 220304 Firmware}
• Support 2.5GbE via HiSGMII or 2500Base-X! ^{See Compatibility, SpeedTest}
• Using newer SFP Body with intergrated heatsink ^{See Picture}
• Very efficient, just 45°C without fan!
• Automatic/Transparent bridge like VSOL V2801F! ^{Using 220304 Firmware}
• Support 4-port ONU Emulation

I recommend TWCGPON657 with V2801F Firmware as V2801F substitute

• Limited 2.5GbE Support ^{wrong LAN_SDS_MODE can lock you out, no auto switch}
• HEX PLOAM Password require modification from @zry98
• Automatic/Full Transparent
• Support 4-port ONU Emulation
• Modern WebGUI

• Majority fiber vendor support multiple ISP
• ISP provide Triple Play service (Internet, VoIP & IPTV)
• Vendor supply 4-port ONU for each service or ISP

Based on ru-board, xPON Stick with 4-Port Emulation support is limited!

If you using 4-port ONU like Huawei HG8240H5, Nokia G-240G-E and Router connected to ONU LAN 2/3/4, you have limited option, I recommend ODI DFP-34X-2C2 with 220304 or newer firmware.

Here list of xPON Stick on the market that support 4-port ONU Emulation:

✔️ Port Emulation Support

❌ Not Supported

Root mean your ONU is All in One where PPPoE/DHCP ended inside ONU (not bridge/route mode)

PVID is VLAN untagging, at router side, WAN connected without VLAN, useful consumer router such as TL-XDR5480 without VLAN support