Push-to-talk (PTT) is a method of conversing on half-duplex communication lines, including two-way radio, by using a momentary button. An air traffic controller, for example, usually speaks on one radio frequency to all aircraft under his supervision. Everyone can hear each other's transmissions and those of the controller, and take turns speaking.

Recently, API Technologies developed a security improvement “Push to Talk” function for Cisco (News - Alert) mobile VoIP handsets, allowing the extension of VoIP infrastructure to mobile users who may be involved with sensitive information.

With this security improvement, mobile VoIP communications can be extended into areas where sensitive information is being disclosed. The modified handset will have all the VoIP and security/encryption, QoS and management features provided by the original Cisco handset, the company stated in a news release.

The ST7925E Push-To-Talk Cisco WiFi (News - Alert) handset allows Push to Talk communications while mobile within a suitable facility. The standard version of the PTT Handset replaces the Speaker activation button of the OEM (normally software deactivated for security) and provides an ergonomic position for both left and right-handed users.

The ST7925E Push-To-Talk Cisco WiFi handset maintains the vast majority of the OEM functions.

“Government agencies are often challenged with how to use mobile technologies to ease communications while still protecting sensitive information,” said Matthew Richards, vice president and managing director of SSIA International, API Technologies “This new Push-to-Talk feature enables users to utilize mobile VoIP handsets in sensitive areas so that the line is ‘open’ only when the button is pressed. This eliminates the ambient background noise – which may contain sensitive information – that would typically be overheard with traditional telephone handsets.”

API recently received a $2.4-million order to provide the manufacturing and testing of a shipboard defensive subsystem, capable of tracking and targeting multiple low horizon threats that will support a national defense program.

Want to learn more about the latest in communications and technology? Then be sure to attend ITEXPO West 2012, taking place Oct. 2-5, in Austin, TX. ITEXPO (News - Alert) offers an educational program to help corporate decision makers select the right IP-based voice, video, fax and unified communications solutions to improve their operations. It's also where service providers learn how to profitably roll out the services their subscribers are clamoring for – and where resellers can learn about new growth opportunities. For more information on registering for ITEXPO click here.

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