TIES was seen mostly in "off-brand" 1200 and 2400 bit/s modems, which were never a large market compared to the high-speed models that followed, it quickly disappeared in the early 1990s when almost all manufacturers switched to Rockwell chipsets, or one of its many clones. The one major exception was Telebit, who used TIES in all of their models released after 1991, namely the T1600, T2500 and WorldBlazer. It is particularly interesting that Telebit would not license the '302 patent, considering that they sold into an upscale market and generally cost over $1000.