Analog PBX system designed for MIMOS / Abdul Ghafar Ali and Fauziah Fadzil

Ali, Abdul Ghafar and Fadzil, Fauziah (1992) Analog PBX system designed for MIMOS / Abdul Ghafar Ali and Fauziah Fadzil. [Student Project] (Unpublished)

Abstract

The purpose of this project is to design Subscriber Line Interface Circuit (SUC) and Dual Tone Multi-frequency (DTMF) cards for a low capacity analog PBX system. The basic hardware model of analog PBX system consists of five parts. They are Backplane or Interconnection Board with Ringing Generator, SLIC card, Switching network, DTMF Transceiver, Tone Generator and Control processor. As the receiver Is off-hook, the scanner unit notifies the control processor which connects the telephone to a tone generator and a dial tone is heard. When the user begins dialing, the tone generator is disconnected and DTMF Receiver responsible for recognizing the dialed digit is connected. The digits are stored until a complete set Is recognized, and the control processor interprets them. A path is built through the switch to specified destination port, where a ring signal Is applied. When the scanner notifies the control processor that the received party has gone off-hook, the calling port is connected to the called port through the switch and the call set-up is completed.

Metadata

Item Type: Student Project
Creators:
Creators
Email / ID Num.
Ali, Abdul Ghafar
89601369
Fadzil, Fauziah
89013348
Contributors:
Contribution
Name
Email / ID Num.
Advisor
Abd. Majid, Zulkifli
UNSPECIFIED
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Telecommunication
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Electrical Engineering
Programme: Advanced Diploma in Electrical Engineering
Keywords: PBX, switch phone calls, electronic
Date: 1992
URI: https://ir.uitm.edu.my/id/eprint/99503
Edit Item
Edit Item

Download

[thumbnail of 99503.pdf] Text
99503.pdf

Download (92kB)

Digital Copy

Digital (fulltext) is available at:

Physical Copy

Physical status and holdings:
Item Status:

ID Number

99503

Indexing

Statistic

Statistic details