Hacking RTL960x

• 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

RTL960x Family

Stick	SoC	NAND
V2801F	RTL9601CI	8MiB (64Mb)
TWCGPON657	RTL9601CI	16MiB (128Mb)
UFiber Instant	RTL9601CI	8MiB (64Mb)
DFP-34X-2C2	RTL9601D	8MiB (64Mb)

Guide, Links, Info

1. Backup env, env2 & config partition ^{Guide by @tdmadam}
2. Setup XPON ONU SFP Stick
   • Clone Stock ONU OMCI Info
3. flash get, flash set
   • xPON Model Id
   • LAN SDS Mode
   • 2.5GbE Compatibility
4. Diagnostic
   • Hidden Link, Firmware Update
   • OMCI_TM_OPT ^{stick cause internet speed slow? this look at this, found by @ccy}
   • OMCI MIB INFO
   • OMCI VLAN
   • Wireshark ^{OMCI decoding for Wireshark by @tdmadam}
   • UART
5. TWCGPON657 × V2801F Firmware
6. V2801F Auto Reboot
7. Firmware Emulator

Where to buy?

ODI DFP-34X-2C2 ^Recommended!

1. HSGQ @ Taobao Mall
2. Fibershow @ AliExpress

Feature

• 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

V2801F Alternative

1. TWCGPON657 with V2801F Firmware as V2801F substitute
2. Opton GP801R ^{Found by @AreYouLoco}

Feature

• 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

Triple Play Multiple ISP Problem, 4-port ONU Emulation

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

4-port ONU Emulation

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

ONU LAN Port Binding example

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.

Table 4-port ONU Emulation

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

xPON Stick	Huawei HG8240H LAN Port						Firmware
	Root	1️⃣	2️⃣	3️⃣	4️⃣	PVID
Huawei MA5671a	✔️	❌	❌	❌	❌	✔️	OpenWRT
Nokia G-010S-P	✔️	❌	❌	❌	❌	✔️	OpenWRT
ODI DFP-34X-2C2	✔️	✔️	❌	❌	❌	❌	210702, 220527
ODI DFP-34X-2C2	✔️	✔️	✔️	✔️	✔️	❓	220304, 220414
TWCGPON657	✔️	✔️	✔️	✔️	✔️	❌	C00R657V2801F_V1.9.0-220404.tar
V-SOL V2801F	✔️	✔️	✔️	✔️	✔️	❌	Stock Firmware

✔️ 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

Multiple ISP

Multiple Service