ITU modem signaling standard allowing data rates of up to 56 Kbps downstream and 33.6 Kbps upstream. V.90 requires a digital connection--via channelized T-1, usually--on the trunk-side access link to avoid the signal degradation inherent in multiple digital-to-analog conversions. In simple terms, this means you can use your regular Analog telephone line to connect our digital modem pool. V.90 is backward-compatible with V.34. NJIT offically supports the V.90 ITU standard for modems.
 

Proprietary 56K technology developed by Rockwell and Lucent Technologies. Since our new modem pool contains a Rockwell chipset it is also compatible with K56Flex. This protocol was not adopted as the ITU standard for 56K. NJIT does not officially support K56Flex, however it is available for use. If you have a K56Flex modem you should contact your modem manufacturer to see if an upgrade to V.90 is availble.
 

The USR chipset supports x2 56K protocol. x2 is a proprietary 56K technology developed by 3Com. This protocol was not adopted as the ITU standard for 56K. NJIT does not offer connectivity for the x2 technology modems. if you have an x2 modem from USR or another company, you should contact your modem manufacturer it see if an upgrade to V.90 is availble.
 

Yes, your x2 modem will connect to the new modem pool, however it will use the ITU V.34 standard and connect at 28.8 kbs.
 

The ITU standard for 28.8 modems and other lower speed modems. It was the first modem standard which was able to fully adapt to the channel characteristics. V.34 can adjust the carrier frequency, the symbol rate and the transmitted power to optimally fit into the communication channel.