#define PHONE_STATE_IDLE    0
#define PHONE_STATE_DIAL    1
#define PHONE_STATE_RING    2
#define PHONE_STATE_CIP     3

void phone_init(void);
int phone_app(EVEWindow *window, EVEViewStack *stack);
int phone_uievt(EVEPage *page, uint16_t evt, void *param);
void phone_close(EVEPage *page);