Definition: CCITT Groups 1-4 - GROK Knowledge Base


		Login

GROK Home

Mobile Site

Printable Version
Export PDF

Categories
Windows 7
Accounts and Passwords
Campus Information
E-mail at LSU
Faculty and Staff
General IT Support
IT Service Catalog
Moodle on GROK
Networking Resources
Public Access Labs
Security at LSU
Student Support
TigerBytes II
Tigerware Support
Visualization
Web Development
Wireless at LSU

Favorites Articles
Popular Articles
Recently Updated Articles

Need Help? Open a Help Desk Ticket!

Topic Suggestions And Feedback

Get setup to add your content to GROK

Categories:

General IT Support > Tech Terms Glossary > C >

Definition: CCITT Groups 1-4

Add to Favorites

A set of four standards for facsimile transmissions.

Groups 1 and 2, which are no longer used, define analog facsimile transmissions.

Groups 3 and 4 describe digital systems, as follows:
CCITT Group 3 Specifies a 9600bps modem to transmit standard images of 203 dpi horizontally by 98 dpi vertically in standard mode, and 203 dpi by 198 dpi in fine mode.
CCITT Group 4 Supports images up to 400 dpi for high-speed transmission over a digital data network (for example, ISDN), rather than over a dial-up telephone line.

CCITT is now known as the International Telecommunication Union.

Article ID: 995
Last Updated: 10/30/2009 1:59:16 PM

Need more help? Open a Help Desk Ticket!

We love feedback! Please help us improve this article.

Article Rating Best Worst

Email Address (optional)

Comments

GROK is a resource of Louisiana State University developed and maintained with support of the LSU Student Technology Fee. We love getting feedback from the general public, but our one on one support efforts are generally dedicated to the LSU community. Thanks for your understanding!