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
- Type: Bridge Connection
- 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

U should be able to configure the netis as modem only.
All the routing / wifi asus handle.