[Asterisk-Users] sip and pix

[duncan]

does anyone have a sip working through a cisco pix firewall?

i can get the phone to register and the call to be negotiated, but as soon 
as the call is answered there is no sound and the call ends 
immediately.  im sure this is due to the RTP negotiation being rejected by 
the pix.  any helpful ways around this?  right now my only solution is to 
put a small box outside the firewall and IAX the connection to the main 
asterisk server, but its not a long term solution and id rather not have 
anything outside the firewall if i can help it.

thanks in advance



duncan