Ricoh fax4700l Operator's Manual page 272

Automatic Fallback from Group 4 Mode to Group 3 Mode
If your machine cannot communicate with the other party using Group 4 mode, it
will try using Group 3 mode. This will allow your machine to send the message
even if you selected Group 4 mode instead of Group 3 mode by mistake.
Terminal ID
Instead of the TTI, a Group 4 communication will transmit a variety of information,
including an identifier known as the Terminal ID, which identifies the other party in
the same way as a TTI.
The make-up of the Group 3 TTI and the Group 4 Terminal ID is as shown below.
Group 3
Date
Label Insertion (To)
Group 4
Rx Terminal ID
Label Insertion (To)
Date, TTI, Page No., and Label Insertion are transmitted in the data signal,
superimposed on the image.
Receiver (Rx) Terminal ID, Transmitter (Tx) Terminal ID, Date (Group 4), Page
No. (Group 4), are transmitted in the Group 4 handshake signals.
The Receiver and Transmitter Terminal IDs have up to 24 characters. The Date
(Group 4) is in the YY-MM-DD-HH:MM format. The Page No. (Group 4) has up
to 7 characters.
TTI
Label Insertion (From)
Tx Terminal ID Date
Label Insertion (From)
Page No.
Page No.
APPENDIX E
261