push-to-talk

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push-to-talk

A feature of walkie-talkies and certain cellphones and instant messaging services that provides instant voice connectivity to the party on the other end. Push-to-talk is a one-way (half-duplex) communication. When you want to talk, you press and hold down a button on the phone, or hold down the mouse button or space bar on the computer. Letting go of the button gives the other person an opportunity to push-to-talk. Nextel popularized the push-to-talk feature on its cellphone service.

press-to-transmit (switch) (PTT)

A switch on an aircraft's control wheel or stick enabling the pilot to make radio transmissions “hands on” via a headset microphone. Also called push-to-talk.
References in periodicals archive ?
Mike Wright, Telstra Networks Group Managing Director said Telstra plays a leading role in developing and defining the standards for new services including next-generation push to talk.
TELECOMWORLDWIRE-31 March 2010-Verizon Wireless extends Push to Talk service to BlackBerry Tour 9630(C)1994-2010 M2 COMMUNICATIONS http://www.
Swedish telecomms solutions provider Ericsson said on Thursday (24 March) that it had, together with the German mobile maker Siemens Communications, successfully completed interoperability tests between Siemens push to talk handsets and Ericsson infrastructure (IMS system including push to talk server).
NII expects subscribers to grow 19% in 2004 along with a 28% rise in revenue, as the company expands push to talk service among users in and between Canada, the United States, Mexico, Peru, Brazil and Argentina by the end of 2004.
Verizon Wireless Push to Talk subscribers can connect directly with each other by pressing a button on their handset.
Sprint has assisted FEMA with the evacuation program since 2008; this year, FEMA chose to upgrade its fleet of push to talk devices to Sprint Direct Connect - the new gold standard in push to talk service.
A new enhancement is now available for Push to Talk Plus customers interoperability between Verizon 3G and 4G LTE devices.
TELECOMWORLDWIRE-17 August 2009-Verizon Wireless to add interoperability for Push to Talk and Land Mobile Radio(C)1994-2009 M2 COMMUNICATIONS http://www.
NORDIC BUSINESS REPORT-28 May 2004-Nokia trials push to talk service in China(C)1994-2004 M2 COMMUNICATIONS LTD http://www.
In addition to Direct Connect[R] and group calling options, the devices are expected to enable Land Mobile Radio (LMR) interoperability, simultaneous data and push to talk, and availability notification.
For information on use cases for Push to Talk Plus in the enterprise and government space, visit the Verizon Enterprise Solutions news center.