Firstly does the 887VA have a WAN port? I know it does VDSL
If this model is doesn't have both these options do you know which model does?
Thanks
The 887 VA doesn't have a separate ethernet WAN port.
The 867VAE has both options, although only one can be used at a time. However it has a more limited feature set than the 880 series.
The product overview section of the hardware installation guide for these models gives an overview of the various options.