Received ZTE H267A today. What I did after the installer completed the installation.
At Internet > WAN > DSL tab > DSL Connection
1. Create new item (Internet bridge VLAN)
- Connection name: BR_VLAN_500
- DSL Transfer mode: PTM
- VLAN: On
- VLAN ID: 500
- Apply
2. PPPoE set to Off
3. Click VLAN Trunk tab
- LAN1 set to On
- Supported VLAN number: 1
- VLAN ID1: 500
- PVID: N/A
- Apply
4. Once done connect own router WAN port to ZTE LAN1. HyppTV connect to ZTE default LAN4
Optional>>
5. If you want to pass the HyppTV to own router then
- At DSL connection > BR_VLAN_600 set to On (default is On)
6. At VLAN Trunk
- LAN1 set to On
- Supported VLAN number: 2
- VLAN ID1: 500
- VLAN ID2: 600
- PVID: N/A
- Apply
2 minor observations. I will try to fix it when have time.

1. ZTE system time not sync with time server. Suspect it can't pick-up internet traffic
2. Internet LED is off. Should be related to above