Yes, you can. You have to use different applications on different incoming voip dial-peers, and these applications should use different auth. method instead of “h323” (modify the app_remote_ip_authenticate.2.0.0.tcl or get the remote IP auth. application where you can configure method from the CLI)
…
aaa authentication login myh323one group rad1
aaa authentication login myh323two group rad2
…