asterisk users - Jan 2004 - Choosing a VoIP Protocol.

Hello everybody,

I have the next scenario, working now.

ISDN Network A---->GW IP 1(*)----IP Network---->GW IP 2(*)---->ISDN 
Network B

Now we are looking the avalibility of sending call's from 1 to 2, using 
an VoIP Protocol supported by *. But we have the next questions, before 
began to do it.

1. There are any VoIP protocol that allow us to send the source number 
from ISDN Network A and the destination number (in ISDN Network B), 
during the session establishment of the call.
2. It's possible that * take the destination number and dial it 
automatically without any user accion to the ISDN Network B.

Note, that we have E400P installed in IP GW2.

Thanks a lot for you help.

Bye bye