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Aculab ISDN Cards Offer High Throughput, Flexibility and Reliability
Publication: CI Press Release Issued: Date: 1996-01-01 Reporter: CI Systems

CI Press Release

1996-01-01

ISDN Cape Town-based systems integrator CI Systems has introduced a range of cards manufactured in the United Kingdom by Aculab Limited for interactive voice response, voicemail, audiotext, video conferencing and similar applications where high throughput, flexibility and reliability are critical requirements.

The range includes Aculabs highly successful Primary Rate ISDN MVIP/PED Digital Access Card, as well as a Basic Rate MVIP/ScBus ISA PC Card and MVIP Multi-Channel DataComms EISA PC Card.

The Primary Rate ISDN Card is available in two versions, one supporting up to 30 speech or data calls over Primary Rate ISDN or private networks and the other up to 60 calls.

Both versions support not just ISDN, but also a variety of other signalling systems such as Channel Associated decadic R2, MFC R2 and ETS300/102 (Euro ISDN). Additionally the cards connect to digital PBXs via DPMSS or to E1-type leased lines.

A notable advantage of these card is that incoming lines can be arbitrarily switched to any of the timeslots available on the PCM buses, giving a high degree of flexibility when using a mixture of resource cards.

The MVIP/ScBus card is a companion product to the MVIP/PED unit and contains up to four independent basic rate ports with up to 8 data or speech channels (two channels per port).

The card contains an MVIP bus with an enhanced compliant switch matrix, compatible with many different MVIP hardware cards. It also includes a PED/ScBus port compatible with a high number of Dialogic products.

These buses allow speech, fax and data calls to be established, maintained and dynamically switched to other resource cards in a system.

The versatile Multi-Channel EISA card (MC card) provides up to 60 channels of V.110 or 60 channels of V.120 or HDLC (dynamically assigned) data call terminations to the MVIP bus. Alternatively, the card provides up to 30 channels of either V.110, V.120 or HDLC.

Gerhard Krger, Technical Director of CI Systems, says: "Typically, the MC card is used in tandem with an Aculab ISDN/E1 unit which furnishes the digital telecommunications network access and call control facilities."

"Calls identified by their service/bearer codes as ISDN data calls are routed over the MVIP bus to the MC card."

Other features of the MC card include an EISA bus to ensure adequate PC bandwidth for data transfer to disk drives and other communications cards, efficient EISA bus mastering and a powerful Intel i960CA processor to free the PC host from low-level tasks such as protocol processing.

Cards in the Aculab range are supported by a variety of operating systems device drivers including those for MS-DOS, OS/2 and Windows NT as well as SCO, Interactive and UnixWare Unix. For more information, call CI Systems on (021) 683-5490.