Biller

The Billing Server is a server that is separate from ASSS that keeps track of player's passwords and handles chat channels.

One biller can be shared between many game servers. This makes chat channel and inter-zone private messaging a desirable feature of a biller. More importantly billers can contain a ban system that allow one ban to effect all zones (called a netban).

Today, the name Billing Server is confusing as it is just a user database. The publishers (VIE) of Subspace probably wanted to charge players a subscription and this server would control it, hence the name biller.

Excerpt from a copy of the VIE website:

We are just concluding deals with various partners the upshot of which is that billing for Subspace will almost certainly not happen till July we are still assuming a $10 a month or $1 a day scheme and a box version that will include several months play built in.