User Manual

6
ISI5634PCI/4/8 User Guide
Introduction
Welcome to the world of data communications. You have acquired one of the finest intelligent data and
fax modems available today from one of America’s oldest and most respected modem manufacturers—
Multi-Tech Systems, Inc.
The new IntelligentSerialInterface card, model ISI5634PCI is a multiport serial port expansion card with
four V.92 data/Super G3 fax modems. The card’s capability can be doubled by adding an auxiliary
module, which also contains four modems. It is an excellent hardware solution for adding fast serial ports
to communication servers and async hosts that have 32-bit PCI bus architecture.
Serial ports are essential to
• Communication servers that pool modems and other communication devices for users on a LAN
• Asynchronous hosts that provide user access through serial ports.
The ISI5634PCI ships with drivers for the following multiuser operating systems: Windows
®
2000,
Windows NT, versions 3.51 and 4.0; Windows 95 , Windows 98, and Windows Me; Novell Netware
versions 3.x and 4.x.; SCO Open Server 5; and Linux.
The IntelligentSerialInterface card can be combined to support asynchronous serial devices (local or
dial-up). The ports can be used to connect basic terminals with or without multiple pages of memory to
multiplexer channels and asynchronous modems. Each ISI5634PCI port can support as many screens as
there are physical pages of memory on the terminal. In Windows 95/98/Me, a built-in autodetect utility
enables detection of Multi-Tech modems and sets the proper initialization strings.
ISI5634PCI Modems
The ISI5634PCI modems are compatible with the ITU-T V.92 protocol that provide quick connections,
downstream transmissions at speeds up to 56K bps, and upstream transmissions at speeds up to 48K
bps when connected to V.92-compatible Internet Service Providers. The V.92 protocol is able to send
downstream from the internet to your computer at these speeds because data on the telephone network
typically is converted from digital to analog only once before it reaches your modem. Upstream
transmissions and transmissions between client modems are limited to 33.6K bps, as are upstream
transmissions that are converted more than once on the telephone line.
Note: Though these modems are capable of 56 Kbps download performance, line impairments, public
telephone infrastructure, and other external technological factors currently prevent maximum 56 Kbps
connections.
Modems on the ISI5634PCI card are Plug and Play capable with interactive automatic dialing and
command mode configuration. In standard mode, you can store up to three command lines or telephone
numbers of up to 40 characters each in the modems’ nonvolatile memory. The modems pulse-or tone-
dial and recognize dial tones and busy signals for reliable call-progress detection. The modems can
detect AT&T calling card tones. They also have DTR dialing, remote configuration, 11-bit capabilities, and
incorporate self-resetting lightning protection. Serial port speeds can be set to 230,400 bps. They are
both FCC registered for connection without notification to the telephone company.
The ISI5634PCI card has full-duplex intelligent modems with V.42 error correction, V.44bis data
compression, and "Super G3" ITU-T V.34 fax communications at speeds up to 33.6K bps with Class 2.1
fax commands. Voice functionality (+V commands) has also been added to the features of ISI5634PCI
modems.
IntelligentSerialInterface
The ISI5634PCI is a multiport serial port expansion card that adds data buffering on each port for
enhanced serial port performance. The ISI5634PCI features an on-board microprocessor to coordinate
the communications activity of your local and remote terminals. Using the ISI5634PCI to provide
additional serial connections enables your system’s processor to perform more efficiently since the
ISI5634PCI handles all byte-by-byte interrupts generated by asynchronous terminals and stores the data
in buffers.