/*** (c) 1992 Uwe C. Schroeder, Anwendungssysteme , Augsburg, Germany**** ** Permission to use, copy, and modify this software and its** documentation for non comercial  purpose is hereby granted ** without fee, provided that** the above copyright notice appear in all copies and that both that** copyright notice and this permission notice appear in supporting** documentation, and that the name of Uwe C. Schroeder not be used in** advertising or publicity pertaining to distribution of the software without** specific, written prior permission.  Uwe Schroeder makes no representations** about the suitability of this software for any purpose.  It is provided** "as is" without express or implied warranty.** This software may not be sold or distributed with commercial products** ( this includes distribution "for users convenience" ) without prior** written permission by the author.**** UWE SCHROEDER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,** INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO** EVENT SHALL UWE SCHROEDER BE LIABLE FOR ANY SPECIAL, INDIRECT OR** CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,** DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER** TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR** PERFORMANCE OF THIS SOFTWARE.****** This is a alpha release, which means, that there are still several** known bugs.**** Please report bugs to:****                     usys@phoenix.abg.sub.org***/#include <stdio.h>#include <sys/types.h>#include <fcntl.h>#include <setjmp.h>#include <signal.h>#include "vfax.h"extern int local;static jmp_buf timeoutbuf;extern int sigALRM();extern int fd;init_fax(){  int tries;  void (*fu)();  fu = signal(SIGALRM,sigALRM);  for(tries = 0; tries < MODEM_INIT_TRIES; tries ++)    {      if(setjmp(timeoutbuf)==0)	{	  fu = signal(SIGALRM,sigALRM);	  alarm(FAX_INIT_TIMEOUT);	  writecmd("ATE0&N32");	  getret("OK");	  writecmd("AT+FCLASS=6");	  getret("OK");      	  fdprintf(fd,"AT#V1#T0#R0#L2#C3#B0#P%s\r\n",LOCAL_FAX_NO);	  getret("OK");/**/	  	  writecmd("AT");	  tcdrain();	  if(getret("OK"))	    {	      alarm(0);	      signal(SIGALRM, fu);	      logto(1,"Fax is syncron");	      return 0;	    }	}      else {	logto(1,"Timeout in sync\n");	return -1;      }    }  return (-1);}/* initialize voice mode */intinit_voice(){  writecmd("ATZE0*P0");  getret("OK");  writecmd("AT+FCLASS=8");  getret("OK");  writecmd("AT+VSM=2");  getret("OK");  writecmd("AT+VSD=21,40");  getret("OK");}int init_vdef(){  if(local)    {      writecmd("AT+VLS=8");      Debug(1,"Set device 8\n");    }  else    {      Debug(1,"Set device 2\n");      writecmd("AT+VLS=2");    }  getret("VCON");}int init_vspeaker(fd)     int fd;{  writecmd("AT+VLS=2");  Debug(3,"Set device to internal speaker\n");  getret("VCON");}int term_vdef(){  writecmd("AT+VLS=0");  Debug(1,"Set device 0\n");  getret("OK");}