Справочник Пользователя для Multitech MT5600ZDXV

This appendix provides information on ITU V.90 support for the Multi-Tech

MT5600ZDX modem.  It lists some of the differences in the ITU-T V.90

code compared to the K56flex only code.

V.90 is the ITU designation for what had formerly been called V.pcm.  The

ITU recommendation V.90 was determined at a meeting in Geneva ending

February 6, 1998.  The current draft revision date is 2/4/98; it is expected

to be ratified later in 1998.

V.90 will replace K56flex and other proprietary solutions for PCM

connections.  Dual-mode client modem code will be important until all

central-site digital modems are upgraded to V.90 and all interoperability

problems have been resolved.  Until that time, the Dual-mode client

code will provide reliable connections in K56flex mode to the central-

site modems currently deployed.

Your V.90 dual-mode (V.90/K56flex) modem now includes:

·New AT commands (+MS=12, AT!),

·  New Result Codes in V.90 mode, and

·  A-law/u-law selection (+MS parameter 5), and various changes to

the AT command documentation.

These new functions are explained in documents that are readily-available

on the Multi-Tech web site in Portable Document Format (PDF) files at

manuals.idc .   You can  download the Acrobat Reader to view PDF files

(you may want to bookmark    http://www.adobe.com/prodindex/

acrobat/readstep.html  before following the “download” link).  For files

with  a .ZIP extension, you can download PKUNZIP.EXE to extract the

zipped files from the Multi-Tech FTP site at: ftp://ftp.multitech.com/

Utiltities/PKUNZIP.EXE.  Using your favorite Web browser, go to

  http://www.multitech.com/support/V.90upgrades.htm  for ad-

ditional information on ITU V.90 support and other Multi-Tech products.