AsteriskNOW & FreePBX – MP3 Voicemail

Test

Based on AsteriskNOW 1.7 with all updates applied (and upgraded to FreePBX 2.9.07) as of 2011-06.  Pieced together from several sources, mostly based on info and script from voip-info.org (sending voicemails as mp3′s).
Download and install the latest version of lame that has been compiled for your architecture.  If you are running Trixbox or AsteriskNOW you are most likely CentOS-5 x86 32bit.

1. wget http://pkgs.repoforge.org/lame/lame-3.98.4-1.el5.rf.i386.rpm
   
2. rpm -Uvh lame-3.98.4-1.el5.rf.i386.rpm

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If the above link does not work then google “dags repo” and dig through there until you find the latest lame for your platform (cat /etc/redhat-release).
Create the following script as /usr/sbin/sendmp3voicemail.pl (view/download sendmp3voicemail).

1. #!/usr/bin/perl
   
2. open(VOICEMAIL,"|/usr/sbin/sendmail -t");
   
3. open(LAMEDEC,"|/usr/bin/dos2unix|/usr/bin/base64 -di|/usr/bin/lame --quiet --preset voice - /var/spool/asterisk/tmp/vmout.$.mp3");
   
4. open(VM,">/var/spool/asterisk/tmp/vmout.debug.txt");
   
5. my $inaudio = 0;
   
6. loop: while(<>){
   
7.   if(/^\.$/){
   
8.     last loop;
   
9.   }
   
10.   if(/^Content-Type: audio\/x-wav/i){
    
11.     $inaudio = 1;
    
12.   }
    
13.   if($inaudio){
    
14.     while(s/^(Content-.*)wav(.*)$/$1mp3$2/gi){}
    
15.     if(/^\n$/){
    
16.       iloop: while(<>){
    
17.         print LAMEDEC $_;
    
18.         if(/^\n$/){
    
19.           last iloop;
    
20.         }
    
21.       }
    
22.       close(LAMEDEC);
    
23.       print VOICEMAIL "\n";
    
24.       print VM "\n";
    
25.       open(B64,"/usr/bin/base64 /var/spool/asterisk/tmp/vmout.$.mp3|");
    
26.       while(<B64>){
    
27.         print VOICEMAIL $_;
    
28.         print VM $_;       
    
29.       }
    
30.       close(B64);
    
31.       print VOICEMAIL "\n";
    
32.       print VM "\n";
    
33.       $inaudio = 0;
    
34.     }
    
35.   }
    
36.   print VOICEMAIL $_;
    
37.   print VM $_;
    
38. }
    
39. print VOICEMAIL "\.";
    
40. print VM "\.";
    
41. close(VOICEMAIL);
    
42. close(VM);
    
43. 
    
44. #CLEAN UP THE TEMP FILES CREATED
    
45. #This has to be done in a separate cron type job
    
46. #because unlinking at the end of this script is too fast,
    
47. #the message has not even gotten piped to send mail yet

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Make the script executable

1. chmod 775 /usr/sbin/sendmp3voicemail.pl

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Change default voicemail format to uncompressed WAV (which will be converted to MP3) and set mailcmd script.
FreePBX -> Voicemail Admin -> Settings

1. format= wav
   
2. mailcmd= /usr/sbin/sendmp3voicemail.pl

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Restart Asterisk and test, test, test.

1. service asterisk restart

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To roll back if required deleted the mailcmd and change format back to wav49|wav.
Enjoy!
http://www.fscker.ca/rc/