PC Advisor: Vendors turn GSM phones into walkie-talkies

My spin by, Ramon Ray, Smallbiztechnology.com: Hmmm, competition for Nextel hey?

Ericsson, Nokia and Siemens today announced that they are teaming up to jointly define specifications for a common operating standard for direct-call push-to-talk services over GPRS. The three, traditionally rivals in the GSM network space, are jointly defining technology specifications to enable “push to talk” on GSM networks with GPRS (general packet radio service) data extensions. Initial trials of the service are set to begin the second half of this year, the companies said in a joint statement. (full story)