The next successor to the Cisco 877 I believe is the Cisco 897VA model. This model takes in Ethernet WAN/ADSL/VDSL/SFP Fibre connections. It also has 8 x 1gb user port connections, and 4 ports are PoE capable.
It allows you to do a lot with the connectivity you require, especially when it comes to the Australian NBN multi-technology mix. It will allow you to terminate your FTTP (Ethernet WAN port) and FTTN (VDSL2 port).
One thing I like about this router is the casing is not plastic like the Cisco 877 and it is metal instead, and it has a nice look and feel to it
Here are some photos of this model:
If you are looking for the latest software for this one to work on the NBN as well as Firmware here it is:
c800-universalk9-mz.SPA.154-3.M8.bin (Release Date 31 July 2017)
Hopefully this has given you a better insight of the new Cisco 897VA Model, and some nice software to operate it on the NBN or your own specific network.
As always welcome any feedback how this router performs for you 🙂