Editing Fax (section)

=== Digital transmission and height of popularity ===
By the late 1970s, many companies around the world (especially Japanese firms) had entered the fax market, and prices for long-distance faxing in 1978 were significantly lower than they had been in 1968, both at high and low speeds. Faxes had become useful to large newspapers and multinational corporations, and some digital methods were being developed. However, the rise of the market was fairly slow. Individual manufacturers had purposefully developed incompatible transmission methods in order to prevent their customers from buying from competitors.<ref>{{cite book |last1=Coopersmith |first1=Jonathan |title=Faxed: the rise and fall of the fax machine |date=2016 |publisher=Johns Hopkins University Press |location=Baltimore |isbn=1421421232 |pages=140-144 |url=https://archive.org/details/faxedrisefalloff0000coop}}</ref> The CCITT (later [[ITU-T]]) Recommendation T.3, defining group 2 fax machines, was the first to offer interoperability in 1976, with a speed of three minutes per page.<ref name="huurdeman"/> 

In 1980, the CCITT's Recommendation T.4 promised groundbreaking interoperability for digital fax machines, with transmission times of just 40 seconds per page.<ref name="huurdeman"/> Accompanying this, a new wave of more compact, faster and efficient fax machines hit the market, leading to two decades of ubiquitous faxing in business contexts. Xerox continued to refine the fax machine for years after their ground-breaking first machine. In later years it would be combined with copier equipment to create the hybrid machines we have today that copy, scan and fax.  Some of the lesser known capabilities of the Xerox fax technologies included their Ethernet enabled Fax Services on their 8000 workstations in the early 1980s.

In 1985, [[Hank Magnuski]], founder of [[GammaLink]], produced the first computer fax board, called [[GammaFax]]. Such boards could provide voice telephony via [[Analog Expansion Bus]].<ref>{{cite magazine |last=Perratore |first=Ed |date=September 1992| title= GammaFax MLCP-4/AEB: High-End Fax, Long-Range Potential|magazine=Byte|publisher=McGraw-Hill|issn=0360-5280| volume=17| number=9| pages=82, 84}}</ref>