Perhaps you are looking for XRemote and Low Bandwidth X (LBX). From the comp.windows.x FAQ :
"XRemote - this is the name of both a protocol and set of products originally developed by NCD for squeezing the X protocol over serial lines. In addition to using a low level transport mechanism similar to PPP/CSLIP, XRemote removes redundancies in the X protocol by sending deltas against previous packets and using LZW to compress the entire data stream. This work is done by either a pseudo-X server or "proxy" running on the host or in a terminal server...."
and
"LBX - Low Bandwidth X; this is an X Consortium project that is working on a standard for this area. It is being chaired by NCD and Xerox and is using NCD's XRemote protocol as a stepping stone in developing the new protocol. LBX will go beyond XRemote by adding proxy caching of commonly-used information (e.g. connection setup data, large window properties, font metrics, keymaps, etc.) and a more efficient encoding of the X protocol. The hope is to have a Standard ready for public review in the first half of next year and a sample implementation available in R6."
The above is from a very old FAQ, does anyone have the URL for the current one, from RTFM perhaps?
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Perhaps you are looking for XRemote and Low Bandwidth X (LBX). From the comp.windows.x FAQ :
"XRemote - this is the name of both a protocol and set of products originally developed by NCD for squeezing the X protocol over serial lines. In addition to using a low level transport mechanism similar to PPP/CSLIP, XRemote removes redundancies in the X protocol by sending deltas against previous packets and using LZW to compress the entire data stream. This work is done by either a pseudo-X server or "proxy" running on the host or in a terminal server...."
and
"LBX - Low Bandwidth X; this is an X Consortium project that is working on a standard for this area. It is being chaired by NCD and Xerox and is using NCD's XRemote protocol as a stepping stone in developing the new protocol. LBX will go beyond XRemote by adding proxy caching of commonly-used information (e.g. connection setup data, large window properties, font metrics, keymaps, etc.) and a more efficient encoding of the X protocol. The hope is to have a Standard ready for public review in the first half of next year and a sample implementation available in R6."
The above is from a very old FAQ, does anyone have the URL for the current one, from RTFM perhaps?