Classic_-_Concepts@cup.portal.com (01/05/89)
Can anyone provide me with information or sources for the format in
which FAX machines transmit data. I would like to take a graphic in
a format I am familiar with and convert it to FAX format for trans-
mission directly from a modem to a FAX machine. That is, I want to
write a utility to accomplish this. Thanks, J. Petersenkap121@ztivax.UUCP (Thomas Oeser) (01/09/89)
In article <13203@cup.portal.com>, Classic_-_Concepts@cup.portal.com writes: > > Can anyone provide me with information or sources for the format in > which FAX machines transmit data. I would like to take a graphic in > a format I am familiar with and convert it to FAX format for trans- > mission directly from a modem to a FAX machine. That is, I want to > write a utility to accomplish this. Thanks, J. Petersen There are two papers I know about: CCITT Recommendation T.4 : 1988, Standardisation of Group 3 Facsimile apparatus for document transmission. CCITT Recommendation T.6 : 1988, Facsimile coding schemes and coding control functions for Group 4 facsimile apparatus. You can get those papers via your local PTT connections... Thomas Oeser ------------------------------------------------------------------------------ ARPA: kap121@ztivax.siemens.com UUCP: kap121@ztivax.uucp (may work only in Europe...) Postal mail: Siemens AG, K Sys Ap 121, Otto-Hahn-Ring 6, P.O. Box 830951, D-8000 Munich 83, West Germany Phone: + 49 (89) 636-47537 FAX: + 49 (89) 636-41477 ------------------------------------------------------------------------------
chuck@Morgan.COM (chuck) (01/10/89)
In article <13203@cup.portal.com> Classic_-_Concepts@cup.portal.com writes: > > Can anyone provide me with information or sources for the format in > which FAX machines transmit data. I would like to take a graphic in > a format I am familiar with and convert it to FAX format for trans- > mission directly from a modem to a FAX machine. That is, I want to > write a utility to accomplish this. Thanks, J. Petersen Is it possible to talk to a FAX machine using a low-cost (Hayes compatible) modem at 1200 baud? Or does the FAX standard employ a different encoding standard? Do you need higher baud rates, etc...? Please forward this information to me as well. Thanks, -- +------------------+ Chuck Ocheret, Sr. Staff Engineer +------------------+ | chuck@morgan.com | Morgan Stanley & Co., Inc. | (212)703-4474 | | Duty now ... |19th Floor, 1251 Avenue of the Americas| for the future. | +------------------+ New York, N.Y. 10020 +------------------+
jxh@cup.portal.com (Jim - Hickstein) (01/20/89)
I have been researching FAX transmission for the purpose of making our satellite datacomm product manage to connect two FAX machines over a dedicated circuit. I have (excerpts from) a document: CCITT T.30 which goes into some detail about the control messages and PIX-format blocks, but doesn't say much about baud rates or modems, per se. I rather suspect that a BELL 212A or its successors won't do the trick, but some smart (and smart-a*s) modems that do the gamut of European things might. Get T.30. -Jim Hickstein VSAT Systems, Inc. San Jose, CA USA jxh@cup.portal.com ...!sun!portal!cup.portal.com!jxh