The standard was formally ratified in September. V.90 is an amalgam of two 56k dialup technologies that preceded it, K56Flex and X2. Also in the works is an all-digital standard V.91 . The manufacturer of the equipment we use is active in the V.91 definition process, and we will be able to offer it when the time comes. 56k modems are upgradeable Recent modems, especially the 56k modems, are upgradeable to V.90 without exchanging any hardware.
Upgrades are downloadable from manufacturers' websites.