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Nokia has unveiled the world's first GSM push-to-talk handset, the sports-inspired Nokia 5140 phone.

The GSM/GPRS/EDGE Nokia 5140 phone will be available in a GSM 900/1800/1900 MHz version primarily for the Europe/Asia market and in a GSM 850/1900/1800 MHz version primarily for the Americas market.

Both versions are expected to be available during the 2nd quarter of 2004.
With just the push of a button, Nokia 5140 phone owners can connect to friends and family by using the push-to-talk feature for quick voice communications, or to access the built in VGA camera to communicate visually.
The push-to-talk feature can be used to quickly connect the user to one person, or to a group of people, simply by using the convenient side-mounted key.
While the Nokia 5140 phone is the first Nokia GSM handset to feature push-to-talk capability, it marks the first step as push-to-talk becomes an increasingly common function.

During 2004, Nokia will introduce a full range of push-to-talk capable GSM phones, including Symbian OS based smartphones. From 2005 onwards push-to-talk will become available for all Nokia GPRS/WCDMA phones.

This "walkie-talkie" style push-to-talk feature of the Nokia 5140 phone is a half-duplex voice over IP (VoIP) solution using the existing GPRS and EDGE data networks that are part of current GSM systems. This method results in performance that on average is comparable to that of existing dedicated push-to-talk cellular networks.

The Nokia 5140 phone features a durable dust, bump and spla

sh-resistant housing that allows it to keep up with demanding users.
Along with its unique lifestyle features, the Nokia 5140 phone also has a generous complement of the latest mobile features. Multimedia messaging capability allows for the sending and receiving of images, sounds and text. The Nokia 5140 phone also supports downloadable polyphonic ring tones, custom wallpapers and Java applications to customize the handset. For additional personalization, optional Xpress-on shells are available in three fashionable color combination schemes.