The resurgence of push-to-talk technologies

Author

DaSilva, Luiz A. ; Morgan, George E. ; Bostian, Charles W. ; Sweeney, Dennis G. ; Midkiff, Scott F. ; Reed, Jeffrey H. ; Thompson, Christie ; Newhall, William G. ; Woerner, Brian

Author_Institution

Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

44

Issue

1

fYear

2006

Firstpage

48

Lastpage

55

Abstract

Push-to-talk (PTT) technologies date back to the advent of the telegraph and more recently have been the domain of traditional land mobile radio (LMR) networks. The past few years have brought about a resurgence in PTT as a service offered by commercial providers, driven first by private subscribers and, increasingly, by organizations such as law enforcement agencies that traditionally rely on LMRs. This technology, today one of the growth areas in the communications industry, has received little attention in the scientific literature. In this article, we discuss some of the emerging technologies (voice over IP, CDMA used in 2.5G/3G systems) that relate to today´s PTT service. We also discuss the market and financial implications of commercial PTT on current LMR deployments.

Keywords

3G mobile communication; Internet telephony; code division multiple access; land mobile radio; telecommunication services; 3G systems; CDMA; communications industry; land mobile radio networks; law enforcement agency; private subscribers; push-to-talk technology; telegraph; voice over IP; Circuits; Communication standards; Dictionaries; Land mobile radio; Multiprotocol label switching; Quality of service; Radio transmitters; Switches; Telegraphy; Telephony;

fLanguage

English

Journal_Title

Communications Magazine, IEEE

Publisher

ieee

ISSN

0163-6804

Type

jour

DOI

10.1109/MCOM.2006.1580932

Filename

1580932