Normal view MARC view ISBD view

Design and development of a call director with digital voice scrambler / by Eugene C. Feranil, Charles A. Fidel, Lora Grace T. Javinal, and Cherry Lou V. Sahagun.

By:

Feranil, Eugene C [author]

Contributor(s):

Material type: Text

TextLanguage: English Publication details: Indang, Cavite: Cavite State University- Main Campus, 2005.Description: xx, 128 pages : illustrations ; 28 cmContent type:

text

Media type:

unmediated

Carrier type:

volume

Subject(s):

DDC classification:

620.0042 D46 2005

Online resources:

Click here to view the abstract and table of contents

Production credits:

College of Engineering, and Information Technology (CEIT)

Abstract: FERANIL, EUGENE C., FIDEL, CHARLES A., JAVINAL, LORA GRACE T., SAHAGUN, CHERRY LOU V. Design and Development of a Call Director with Digital Voice Scrambler. Undergraduate Design Project. Bachelor of Science in Electronics and Communications Engineering. Cavite State University, Indang, Cavite. October 2005. Adviser: Engr Mary-Anne D. Costa. The call director with digital voice scrambler was developed with the aim of providing a means of secured communications and through telephone conversations by prevention of wiretapping. The design project has three (3) major functions; call directing, voice scrambling and voice unscrambling. The call director's main function is to have wired connections in all of the telephones with one telephone line selectively shared by telephone devices (extensions). The voice scrambler/descrambler was designed to scramble /unscramble the voice signals before sending it over the telephone line. It operates in pairs, which means that both parties should have a scrambler unit in order to make the voice signal unintelligible The design project underwent a lot of modifications before it attains its goal of voice scrambling/descrambling, thus, preventing wiretapping. The technical evaluation took place in the faculty room of the College of Civil Engineering. After the evaluation, the design was recommended for final evaluation through pilot testing. It was installed within the College of Engineering and Information Technology (CELT), specifically in the faculty room of Departments of Computer and Electronics Engineering, Information Technology and Civil Engineering on July 06-14, 2005. Based on the results of the evaluation, the faculty members who evaluated the device agreed that it was functional and could facilitate communication.

Average rating: 0.0 (0 votes)

Holdings ( 1 )
Title notes ( 5 )

Holdings
Item type	Current library	Collection	Call number	Materials specified	URL	Status	Notes	Date due	Barcode
Theses / Manuscripts	Ladislao N. Diwa Memorial Library Theses Section	Non-fiction	620.0042 D46 2005 (Browse shelf(Opens below))		Link to resource	Room use only	DP-185		00001259

Browsing Ladislao N. Diwa Memorial Library shelves, Shelving location: Theses Section, Collection: Non-fiction Close shelf browser (Hides shelf browser)

Previous	No cover image available	No cover image available	No cover image available	No cover image available	No cover image available	No cover image available	No cover image available	Next
Previous	620.0042 D45 2017 Development of an arduino-based fruit dehydrator /	620.0042 D46 2000 Design of PC-based CEng examination booklet vending machine /	620.0042 D46 2004 Design and implementation of wireless weather station /	620.0042 D46 2005 Design and development of a call director with digital voice scrambler /	620.0042 D48 2002 Design and development of a PC-based air temperature and rainfall monitoring system /	620.0042 D49d 2019 Development of integrated wireless technology instructional trainer /	620.0042 D58 2002 Design and development of a microprocessor-base College of Engineering and Information Technology examination checker /	Next

Design Project (BS Electronics and Communications Engineering) Cavite State University.

Includes bibliographical references.

College of Engineering, and Information Technology (CEIT)

FERANIL, EUGENE C., FIDEL, CHARLES A., JAVINAL, LORA GRACE T., SAHAGUN, CHERRY LOU V. Design and Development of a Call Director with Digital Voice Scrambler. Undergraduate Design Project. Bachelor of Science in Electronics and Communications Engineering. Cavite State University, Indang, Cavite. October 2005. Adviser: Engr Mary-Anne D. Costa.
The call director with digital voice scrambler was developed with the aim of providing a means of secured communications and through telephone conversations by prevention of wiretapping. The design project has three (3) major functions; call directing, voice scrambling and voice unscrambling. The call director's main function is to have wired connections in all of the telephones with one telephone line selectively shared by telephone devices (extensions). The voice scrambler/descrambler was designed to scramble /unscramble the voice signals before sending it over the telephone line. It operates in pairs, which means that both parties should have a scrambler unit in order to make the voice signal unintelligible The design project underwent a lot of modifications before it attains its goal of voice scrambling/descrambling, thus, preventing wiretapping. The technical evaluation took place in the faculty room of the College of Civil Engineering. After the evaluation, the design was recommended for final evaluation through pilot testing. It was installed within the College of Engineering and Information Technology (CELT), specifically in the faculty room of Departments of Computer and Electronics Engineering, Information Technology and Civil Engineering on July 06-14, 2005. Based on the results of the evaluation, the faculty members who evaluated the device agreed that it was functional and could facilitate communication.

11/14/2005 DP-185 Submitted to the University Library