/* real modem: suitable for ltmodem *//* Copyright 1999 Pavel Machek <pavel@suse.cz>, distribute under GPL v2 */#include "lm.h"#include <unistd.h>#define NB_SAMPLES 0x50extern struct sm_hw_info sm_hw_null;void readit(int f, void *buf, int len){        int res;        while (len > 0) {		if ((res = read(f, buf, len)) <= 0) {                        printf("Read failed: %m");			exit(5);		}                len -= res;                buf += res;        }}char *modem_command = "tee /tmp/delme.xmit | ltmodem -u 2> /dev/null | tee /tmp/delme.rec\n",     *dial_number = "31415926";