andres,
why is authentication done by ser not enough?
-- juha
Lets say we have 5000 subscribers. One of them signs up for and additional account with an SPA3000(FXO Port). If the SPA3000 does not authenticate the incoming INVITE, then any of our 5000 subscribers can authenticate with our SER and then use this guys FXO port on the SPA3000. The idea is that only his "authorized users" can use his FXO port. The SPA3000 has room for up to 8 accounts for digest authentication, so he can select up to 8 firends/family to use his personal gateway.
Hope this is a bit more clear.