The goal of the standards should be to serve both groups well. Fax Session Requirements. The requirement mentioned in the charter is that confirmation of delivery occurs before the end of the session. Capability negotiation occurs between the end terminals. This includes the legacy group 3 machines.
Negotiation is what seperates fax from file transfer.
At Brooktrout we have identified at least 5 different end terminals for IP Fax protocols. Traditional G3 fax machines who are connected to the IP network via the PSTN and a gateway. Email based messaging systems. This includes SMTP mail as well as things like voice mail systems that use something like VPIM for fax messages. Traditional G3 fax machines who are connected to the IP network via an adapter box.