Ibm 7852 Model 400 Modem - IBM i series Handbook

a parallel printer port. Different models of the 3153 offer green, amber, or white monitors. The
3153 meets recognized international standards and guidelines on ergonomics, emissions,
safety, and power consumption.

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 Electronic
Customer Support communications for the iSeries. Custom application settings are 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 a command mode option
configuration. Store up to ten command line or telephone numbers of up to 60 characters
each in the non-volatile memory. The modem 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).
The features of the modem include:
• 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 configuration
Provides support for users at remote sites, saving the time and trouble of site visits and
preventing misinterpretation of configuration instructions.
The 7852-400 includes dial back-up with automatic lease line restore, adaptive protocol
enhancing used in typical UNIX batch file transfers, and support for the iSeries environment.
Peripherals
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Peripherals