Path: utzoo!utgpu!water!watmath!clyde!att!mtuxo!mtgzz!drutx!druco!stanwyck
From: stanwyck@druco.ATT.COM (D. Stanwyck)
Newsgroups: comp.dcom.modems
Subject: Re: Group 3 Fax Protocols
Message-ID: <3144@druco.ATT.COM>
Date: 12 Sep 88 16:43:16 GMT
References: <1812@spdcc.COM>
Organization: AT&T, Denver, CO
Lines: 30

in article <1812@spdcc.COM>, eli@spdcc.COM (Steve Elias) says:
> these protocols are described in documents from CCITT (d'accord?).
> group 2 is simple bitmapped graphics.  
> group 3 encodes the bitmap via a nifty combination of runlength
> and Huffman coding...  get ready to do a lot of accurate typing 
> if you want to do your own conversions...
> ... products might be able to get you a copy of the CCITT spec, if you 
> don't feel like writing to France.  (they must be available somewhere
> in the US -- i don't know where, though).

To get a copy of the 1984 version of the Group 2 and Group 3
recommendations, contact Omnicom, Inc, in Vienna, VA (703) 281-1135.  They
are the official representitives in the USA.

Writing to France won't help.  The CCITT is located at the ITU tower in
Geneva, SWITZERLAND.  To order directly from the CCITT, allow 15 weeks for
delivery, and enclose a check for the correct amount in Swiss Francs.  The
address is:  
	CCITT - Document Order
	International Telecommunications Union
	Place des Nation
	CH-1211 Geneva, Switzerland

The text you are looking for the Fascicle VII.3, also known as the T-series
Recommendations.  Recommendation T.3 covers Group 2, T.4 covers Group 3.
You should also read T.0, T.10. T.10bis, T.20, T.21, and T.30. 
-- 
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Don Stanwyck		         ||   			druco!stanwyck
Denver, CO USA			\__/			Telecom Standards