Oki OKIFAX 5750, User Manual, Page: 121 / 154

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Appendix D - ISDN G4 Board 107
Appendix D - ISDN G4 Board
The ISDN G4 Board is an optional package which enables your machine
to function as a digital facsimile transceiver conforming to Group 4 ITU-
T recommendations. It is equipped with an automatic fallback feature that
enables the machine to communicate in G3 mode when its G4 signal is
rejected or a G3 signal is received.
This board also supports dual mode communication, which means that a
G4 signal and a G3 signal can be received or transmitted simultaneously.
Main specifications
G3 mode
Network compatibility ISDN, Circuit switch mode (PSTN not
available when activated)
Network interface ITU-TI.430, ETS 300 012. Basic rate
interface (2B+D), S/T interface, RJ45
Compatibility ITU-T G3(auto-fallback G4
→
G3)
Transmission speed 33.6kbps max.
Coding scheme MH, MR, MMR (JBIG for OKIFAX 5950
only)
Resolution 8 dots x 3.85 lines/mm
8 dots x 7.7 lines/mm
8 dots x 15.4 lines/mm
300 x 300 dots/inch
Transmission time 2.5sec (ITU-T No.1 chart, 33.6 kbps, JBIG,
8 dots × 3.85 lines/mm)
Error correction ECM, page retransmission with redial
CODEC ITU-T G.71 (auto-select by country code)
Network service Calling line ID (CLIP) Yes
Sub-addressing (SUB) Yes
Multi-Subscriber No. (MSN) Yes
5750GB.book Page 107 Tuesday, June 6, 2000 8:08 PM