IBM AS/400e, Руководство пользователя

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Peripherals
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AS/400e System Handbook
controllers on the AS/400 system that support TCP/IP are the #2720, #2722, #6180, and
#9280. There are two 5250 TCP/IP transport drivers, which allow TCP/IP to use twinax
cabling, now included with the 5250 Express Adapters: one for Microsoft Windows 95 and
one for Windows NT. The transport drivers are also available for downloading from the Web
at:
http://www.networking.ibm.com/525/525home.html
The 5250 Express Network Kit includes everything needed to enable TCP/IP applications for
five PCs:
• Five 5250 Express ISA adapters with the 5250 TCP/IP Transport Drivers
• Five DB15 to UTP RJ45 Baluns
• One Twinax-to-UTP Baluns
• One 7299 Express 400 Model 2EX
Six 10-foot UTP patch cables are included with the kit. Additional UTP cables may be
required depending on the size of the customer site.
The 7299 2EX has a distance limitation of Legacy 1 Mbps transmission speed (where
nonprogrammable workstations are included on a port) host to 7299 is 610m (2,000 feet),
while 7299 to device is 671m (2,200 feet).
IBM 7852 Model 400 Modem
The 7852 Model 400 is an externally attached data/fax modem capable of full duplex
transmission speeds of up to 33.6 Kbps. It operates in either synchronous or asynchronous
mode and supports electronic mode switching using V.25bis AT commands. Connections can
be made on Public Switched Telephone Networks (PSTNs) and point-to-point two-wire leased
telephone type circuits. Other features include enhanced V.34 standards, callback security,
remote configuration, and automatic rate negotiation between modems. The modem is
factory set for AS/400 Electronic Customer Support communications, with custom application
settings available through the use of dip switches.
ITU V.42 error correction and V.42bis data compression provide 100% error-free data
transmission. It offers interactive automatic dialing, as well as command mode option
configuration. You can store up to 10 command line or telephone numbers of up to 60
characters each in the non-volatile memory. The modem pulse or tone dials and recognizes
dial tones and busy signals for reliable call-progress detection. The modem can detect AT&T
calling card tones. It is FCC-Registered for connection to telephone networks without any
Data Access Arrangements (DAAs).
It offers Callback Security to protect networks from unauthorized use and to help manage
phone line costs. By using the modem's phone number and password directory, a host site
can, upon receipt of a call, call back to a remote site at a predetermined number. Remote