STOCKHOLM - 26 June 2004. In the latest white paper from Northstream, one of the world's leading independent mobile analysts, Push-to-talk solutions for circuit switched networks are compared to solutions for packet switched networks. The estimation shows that PoC (Push-to-talk over Cellular) over GPRS is at least five times more efficient than Push-to-talk solutions over circuit switched networks from a radio resource consumption point of view. Furthermore, EGPRS shows to be 14 times more efficient.

When this is translated into cost for a sample case, dimensioned according to prevalent rules, a circuit switched solution proves to be over six times more expensive than PoC over GPRS.

PoC is a Push-to-talk solution for packet switched networks specified by OMA (Open Mobile Alliance). Even though there is support for a standardised solution, proprietary pre-standards solutions (both circuit switched and packet switched) are not ruled out by the operators at this...