Specification; Description Of 56K - Samsung N860 User Manual

Description of 56K

There are different standards regarding 56K technology.
K56Flex.
Technology developed by Rockwell Semiconductor Systems and Lucent
Technologies
X2.
Technology developed by USR (US Robotics, now 3Com)
V.90 Standard.
In February 1998, The ITU-T (ITU Telecommunication Standardization
Sector) agreed on the technical specifications for 56K modems (V.90) and has
approved in mid-September, 1998.
But, the modem driver can be updated to resolve fine points of operation
between different vendor's modems and unusual telephone line conditions.

Specification

Data communications.
V.90, K56Flex, V.34+, V.34, V.32bis, V.32, V22bis, V.22, V.23, V.21
BELL212A
Data throughput speed
56,000 bps ~ 28,000 bps (V.90, downstream only, step: about 1333 bps)
42 Using the Modem
K56Flex and X2 are not interoperable.
1. Due to FCC limitations, speeds of 53kbps are the maximum
permissible transmit power levels during download
transmissions.Actual data speeds will vary depending on line
conditions.
2. In order to use the 56K feature, be sure to check if the
standards supported by the on-line service provider and the
modem are identical.
If you use a PBX phone system, you can not connect using
the 56K mode due to line loss.