Is a fax sent by a fax machine to a T.38 enabled fax platform sent as T.30 end to end?
The fax sent by a fax machine will be T.30 end to end. When that fax hits the IP gateway, the gateway will encapsulate the T.30 protocol data in the T.38 packets, which are then sent to the TR1034 board. The fax call is T.30 end-to-end, it’s just that part of the call is over a traditional phone network, and part of the call is over a packet-switched network. This is different from G.711 pass-through, which is an option on many IP gateways.
