Milton Zucker wrote in a message to All:
 MZ> I recently got a 56k modem using 56 k-flex technology and
 MZ> understand that the 56k standard won't work unless one of the
 MZ> connections is a digital connection such as used by an internet
 MZ> service provider such as AOL, Erols, etc.  Is the same limitation
 MZ> imposed by the X-2 standard (i.e., if 2 individuals with x-2 modems
 MZ> connect with each other, will the X-2 standard kick in or would one
 MZ> of the modems have to have a digit connection?)  ...Milton...
Yes.  K56Flex and x2 require a digital (server) connection at one end of the 
line and a single digital to analog conversion. In the case of x2, 3Com/USR 
have ISDN TAs/modems which can also act as x2 servers.  There are several 
hobbyist system  using Courier Imodems. For K56Flex, I have not as yet 
received any information on an ISDN TA with K56Flex server capability.
Regards,
       David
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