The Rockwell company has introduced a new standard: the K56flex standard. This standard is offered as an alternative to the X2 technology of US ROBOTICS.
It enables speeds in the region of 56Kb/s to be reached over an asynchronous connection. It is differentiated by coding and server.
The average speed is 50 Kbps but the company reckon on achieving rates in the region of 110 then 230 Kbps for data offering a high rate of compression. In the beginning the two standards were judged to be able to develop.
Since 1998 the standards have been established. So, the majority of modems offer a "flash" bios (i.e. a modem which can be developed). Using the V90 standard, 56K modems should now be compatible between themselves.