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LBI-39040 PI HARDWARE

TVME-712M I/O Transition Module

The TVME-712M is a separate circuit board which receives the PIC I/O lines from the P2 Adapter Assembly ribbon

cables and routes them to the appropriate industry standard connector on its front panel. The I/O Transition Module has four

DB-25 connectors for serial I/O, a 50-pin SCSI port connector, a DB-15 connector for Ethernet, and a Centronics compatible

printer connector. Jumpers on the I/O Transition Module allow the serial ports to be configured as DTE or DCE. The I/O

Transition Module has sockets for SCSI terminating resistors.

Multisite Interface Controller (MIC)

The MIC provides an RS-422 communication link between the PI and the PIM in the IMC using LAPB.

Primary Rate Interface (PRI)

The PRI-64 Integrated Services Data Network (ISDN) card is a VMEbus-compliant E1 interface card optimized for data

formatting and transmission in digital switching applications. This card supports two E1 spans: one from the E1 MUX

carrying IMC audio channel information, the other from the MD110 ISDN interface. On-board dual port RAM is used to

facilitate communication with the PI MIC card via the VMEbus.

The PI-MD110 E1 interface supports ISDN primary rate signaling (30B + D, i.e., 30 audio connections plus a control

channel). The PRI card is supplied equipped with all necessary ISDN software to control call functions as defined in layers 1

through 3 of the ISDN specification, i.e., I.430, Q.921, and Q.931. The PRI card supplies layer 3A to provide a

comprehensive communication mechanism with the PI application software.

For the North American, Japanese, and Korean markets, the PRI-48 ISDN card (T1) is used, with the corresponding

decrease in B channels from 30 to 23.

PI Administrative Terminal

The administrative terminal allows the user to control system operation, view the system configuration, and view the

activity logs stored on the fixed disk.

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Ericsson LBI-39001 Manual do Utilizador Página 8