Ericsson LBI-39076B Description / Installation, GTI Interface Board, GTI Configurator Software

LBI-39076B DESCRIPTION / INSTALLATION

The telephone line interface provides the following functions for radio-originated calls:

∙Applies signaling to seize telephone line.

∙Detects signaling from telephone line.

∙Generates and applies telephone number digits to telephone line.

∙Sends voice prompts to telephone line.

∙Detects end-of-call signaling from telephone line.

∙Removes signaling to drop telephone line.

One GTI converts the analog audio signal (from the radio channel connected to it) into a digital signal for placement onto the PCM/Data bus. Another GTI (or the same GTI) converts the digital signal from the PCM/Data bus back to an audio signal (for the telephone line connected to it). A similar route is taken by the signal from the telephone line to the radio channel. Each radio channel has its own time slot on PCM/Data bus so as not to interfere with any other radio channel.

print real-time records of calls being placed on the system. Records can also be retrieved from the IAM at any time using the PC-based GTI Configurator software. Call detail records contain the following information:

∙Record Type

∙Start Time

∙Elapsed Time

∙Call Type

∙Radio User ID

∙Line Number

∙Channel Number

∙Phone Number Dialed (up to 20 digits)

∙System Number

∙Node Number

GTI INTERFACE BOARD

The GTI Interface board serves as the information and command interface between the Site Controller computer and all the GTI units in the system. It is installed in only one GTI unit, which then becomes the Master GTI.

GTI CONFIGURATOR SOFTWARE

The GTI Configurator software is a PC-based, menu- driven program (supplied in both 3.5-inch and 5.25-inch floppy formats) that allows the system operator to change parameters in the GTI database, retrieve GTI call records, and monitor the system activity.

IAM

The optional IAM (Interconnect Accounting Manager) is a microprocessor-based call-detail buffer, containing two megabytes of battery-backed RAM to provide storage for up to 60,000 call detail records, compatible with the EDACS Billing Correlation Unit. At the completion of each call, a call detail record of that call is sent to the IAM. The IAM provides a serial data port for a printer to be connected, to

INSTALLATION

OVERVIEW

The installation of the ELI option has been divided into 14 steps, which are described in this section. Not all steps will apply to all installations. Some steps involve more than one activity.

Table 1 shows a flow chart of the installation activities for various pieces of equipment. The activities to the right of a heavy vertical line should not be started until all those activities to the left of the line have been completed for that piece of equipment. The number in a circle to the left of each activity indicates the installation step in the text where the activity is described.

These 14 installation steps plus the configuration of the Site Controller database (contained in the Configuration section of this manual) and the configuration of the GTI database (contained in the GTI Configurator software user’s guide) are summarized in the Installation Checklist at the end of this manual. Make a copy of this checklist, and check off items as they are completed.

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