Tadiran Telecom Coral IPx Office, Installation And Hardware Reference Manual, Page: 38 / 510

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Introduction Coral IPx Office Installation Manual
About the Coral IP
x
O
ffice
1
Circuitry
The Coral IPx Office includes digital communications switching based on Pulse Code
Modulation (PCM) switching technology. The active circuitry of the system is
embedded on the MCB Office card and removable cards.
The active circuitry of the IPx Office system serves common control and peripheral
functions. The common control circuitry directs call traffic through the system,
establishing audio connections between peripheral ports and an outlet to the IP world.
The peripheral circuitry provides the hardware necessary to establish those
connections. Instructions from the common control to the peripheral circuitry, and
status information from the peripheral circuitry to the common control are passed
through the group controller, which provides driver and time slot interchange
functions for the PCM highways and the HDLC channels.
The common control is further divided into shared service, the group controller, the
main central processor, connection to the IP and the MRC.
The shared service circuitry is integrated into the MR / RMI / U-MR / U-RMI Office
peripheral card, which provides the equipment necessary to establish calls between
peripheral interfaces.
The peripheral interface circuitry provides standardized electrical connections to
external telephone station equipment and network facilities.