Oki 5700 - Manual (Page 123)

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ISDN G4 Board D-1
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.
Main Specifications
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
G3 mode
Compatibility ITU-T G3(auto-fallback G4
→G3)
Transmission speed 33.6kbps max.
Coding scheme MH, MR, MMR
(JBIG for Model B only)
Resolution 8 dots x 3.85lines/mm
8 dots x 7.7lines/mm
8 dots x 15.4lines/mm
300 x 300 dots/inch
Transmission time 2.5sec
(ITU-T No.1 chart,33.6kbit/s,
JBIG, 8 dots × 3.85lines/mm)
Error correction ECM, page retransmission with redial
CODEC ITU-T G.71
(auto-select by country code)