Siemens CX70

Siemens mobile is the world first manufacturer to offer an end-to-end solution for - Push and Talk (PaT) based on open specifications. The CX70 features walkie-talkie functionality over mobile networks and makes group calling easier and faster than ever before. As the first Voice-over-IP application, Push and Talk is based on the IP Multimedia Subsystem (IMS), the technology platform for many future multimedia services.