Installing The SCbus Interface Board
In The Impact FXS Digital Communications System
Introducing The SCbus Interface Board
The SCbus interface board allows Computer Telephony (CT) applications to connect one or more SCbus
compatible circuit boards in the Impact FXS computer (for example; network, voice, fascimile, speech
recognition, video, and so forth) to the Impact FXS’ digital station or trunk ports through time division
multiplexing (TDM) on the SCbus.
SCbus is a TDM bus for communications within a node of the Signal Computing System Architecture (SCSA).
(The SCSA standard specifies the signal processing system for PC-based voice and call processing, and telecom
switching.) The SCbus features an architecture that includes a serial message path for signaling and control and a
16-wire parallel Time Division Multiplexing (TDM) data path.
The conversion of a CTI application from traditional loop start ports to digital SCbus ports provides a more
effective and efficient operation than that provided by analog ports, which historically have been used in the CTI
industry.
CTI applications use the Enterprise or wideopen.office
toolkit in order to perform switching operations and call
processing on the Impact FXS SCbus interface board that is plugged into the Impact FXS proprietary telecom
backplane. These toolkits consist of PC software libraries that provide the instructions to the FX system for
performing these functions.
When installing more than one SCbus interface board, install the first one in the 6th (top) universal board slot of
the Impact FXS telephony portion and the next one in the 5th universal board slot, and so forth. Connect the
SCbus interface board’s ribbon cable to the CTI application board that is plugged onto the Impact FXS
computer’s motherboard. The internal cable connection between the SCbus board and the CTI application board
routes the voice-path between the two locations. Attach the PC power cable from the power supply to the SCbus
interface board to the first SCbus interface board you installed. Any subsequent SCbus interface boards you install
do not require the power connection. In addition to these internal cables, the installation requires external cabling
between the Impact FXS system’s computer and telephony portion. The particular external cabling required is
dependent upon the CTI application being operated. For example, when using a voice mail application, a cable is
required to connect the computer’s COM 2 port to the telephony’s COM 2 port. The cabling requirements are
illustrated in the figure on page 7 of this instruction.
An SCbus installation includes the following items:
•
SCbus Interface Board (product code FXSCBUS)
•
SCbus Application Board or Boards (as needed)
•
Enterprise ToolKit Software including all required disks (product code ENTRP-SW)
wideopen.office
is a registered trademark of Comdial Corporation, Charlottesville, VA
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This manual has been developed by Comdial Corporation (the “Company”) and is intended for the use of its customers and service personnel. The information in this manual is subject to change without notice.
While every effort has been made to eliminate errors, the Company disclaims liability for any difficulties arising from the interpretation of the information contained herein.
The information contained herein does not purport to cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with installation, operation, or
maintenance. Should further information be desired, or should particular problems arise which are not covered sufficiently for the purchaser’s purposes, contact Comdial, Inside Sales Department,
Charlottesville, Virginia 22906.
Printed in U.S.A.
IMI89–313.01
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