Appendix D ISDN G4 Board121Appendix DISDN G4 BoardThe ISDN G4 Board is an optional package which enables your machineto function as a digital facsimile transceiver conforming to Group 4 ITU-T recommendations. It is equipped with an automatic fallback feature thatenables the machine to communicate in G3 mode when its G4 signal isrejected or a G3 signal is received.This board also supports dual mode communication, which means thattwo G4 communications can be received or transmitted simultaneously.Main specificationsG3 modeNetwork compatibility ISDN, Circuit switch mode (PSTN notavailable when activated)Network interface ITU-TI.430, ETS 300 012. Basic rateinterface (2B+D), S/T interface, RJ45Compatibility 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 3.85 lines/mm8 dots x 7.7 lines/mm8 dots x 15.4 lines/mm300 x 300 dots/inch600 x 600 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 re transmission with redialCODEC ITU-T G.71 (auto-select by country code)Network service:Calling line ID (CLIP) YesSub-addressing (SUB) YesMulti-Subscriber No. (MSN) YesOptionsPC FAX (IEEE 1284 I/F) TIA/EIA Class 1 (14,400kbit/s max.)
