There is a few casinos in Aus that use ASP, the ones I work with all use a mixture of protocols, SAS, X-Series, QCOM etc. In the pub/club world, its all moving to QCOM, but there is still X-Series (NSW) and and VLC (Victoria).
SAS is by far the most popular protocol in my experience, and casinos that dont support it are very much crippled in getting new games onto the floor. AS I said elsewhere, surfing the audit menus usually gives up enough protocol specific info to figure out what is being used. Best part to look for would be bonus and funds transfer, as the SAS stuff is pretty specific.
The protocol(s) used will often be specific to the casino and what host system they use, so trying to figure out what your machine has based on where you think it came from is probably not going to help. Sometimes a regulator will specify what they want, and you can usually find that info from surfing the web.
Hit the audit menus, and post up pics on config.