Canon ImageRUNNER 2545i Sending And Facsimile Manual page 315

Transmission Time
TTI
TX
10
10-16
Glossary
A fax transmission consists of three stages: the machine sending the fax connects
with the machine receiving it, the message is then transmitted, after which the sender
and the receiver exchange signals to confirm the end of transmission. The
transmission time described in this guide is not the total time required for the entire
transmission, but only the time taken for the message to transmit.
Transmit Terminal Identification. Also called the TX Terminal ID. The TTI is the name
of a person or an organization and the facsimile number of the machine that sends a
document.
Abbreviation for "Transmission/Sending."