Does Cisco asa's, specifically 5500 series support RFC 6466 for Sip NAT translations? I currenlty have a IP/PBX that uses RFC 6466 for faxing via T38. I also have a sonicwall firewall that supports NAT translation within my SIP message but doesn't support translating the SIP Re-invite to T38. Sonicwall states the reason the connection address within the SDP isn't being NATed on the t38 reinvite is because they don't support RFC 6466.
I believe my only option to get my fax working is to purchase another FW that supports it, but am having difficulty confirming whether the 5500 series will support this or not. ANy help is greatly appreciated.
