NPPPD_PHONE_NUMBER_LEN
char number[NPPPD_PHONE_NUMBER_LEN + 1];
char pn_number[NPPPD_PHONE_NUMBER_LEN + 1];
char calling_number[NPPPD_PHONE_NUMBER_LEN + 1];
char calling_number[NPPPD_PHONE_NUMBER_LEN + 1];