Rockwell Announces High-Speed Modem Interface Drivers

Rockwell International Corporation announced two high-speed interface
drivers which implement the Rockwell High-Speed Interface (RHSI -- patent
pending): a Windows 3.1/Windows for Workgroups-compatible serial
communications driver and a Media Control Interface (MCI) audio driver
that supports the Windows multimedia services.  The serial communications
driver is designed to enhance the overall modem system performance and
allow existing communications applications to deliver data throughput
speeds higher than 200 Kbps through the Windows serial communications
channel.  The MCI audio driver provides the additional support of
low-level audio services for existing Windows multimedia applications.

Rockwell's latest family of products have exceeded existing modem line
rates and now deliver data at 28.8 Kbps across standard telephone lines. 
With data compression, the DTE-link (Data Terminal Equipment link) between
the PC-host and the modem needs to support 115.2 Kbps.  Our business audio
product will require the DTE-link to deliver more than 200 Kbps.  The
drivers provide these capabilities without requiring additional hardware
cost and scarce DMA (Direct Memory Access) system resources."

The RHSI drivers will support the RCV144ACi-BA, an integrated data/fax/
voice/business audio chipset, and the V.Fast Class modem family, which is
capable of reaching data rates as high as 28.8 Kbps.  The drivers provide
the required data throughput by overcoming the UART limitations of
traditional modem systems.  They also improve overall system performance
by reducing interupts to the host PC and preventing data loss by taking
advantage of existing modem buffering capabilities.

The RHSI serial communications driver is available now, and the MCI audio
driver will be available in December 1993.  Both software drivers are
being offered at no cost to support communications vendors, MCI
applications vendors and modem OEMs.

Rockwell International Corp
Digital Communications Division
4311 Jamboree Rd., M/S 501-300
Newport Beach, CA  92658-8902

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