Cisco 887 router

Well, it looks like not many persons are left to answer...

I can't answer that particular thing, it appears to depend on country. Better ask locally what system is used.

I do have a 887 and was considering to buy a 887VA for VDSL but in the end I decided to get a Draytek 2860n+. It can do most things the Cisco can do at 1/5 of the price, and as I was buying it as a consumer I also preferred the consumer service. (On the Draytek you get warranty and software updates, on the Cisco these cost even extra on the already much higher price)

But of course there may be special things that the Cisco can do and the Draytek can't. I required lots of features including VPN, policy routing, VLAN, multiple internal networks, IPv6, dual-band wireless with multiple SSID, fallback WAN connection and the Draytek does it all.

I don't think that is a differentiation, probably just bad rewording.

Further on in the datasheet you have the listing

C887VA-K9 Cisco 887 VDSL/ADSL over POTS Multi-mode Router C887VAM-K9 Cisco 887 VDSL/ADSL Annex M over POTS Multi-mode Router

So, I think ADSL Annex M is the key difference. ITU G.992.5 Annex M lets the ISP provision a faster uplink channel (with corresponding decrease in downlink channel speed), depending on distance from DSLAM.