/etc/asterisk/musiconhold.conf

[default]
mode=quietmp3
directory=/var/lib/asterisk/mohmp3

[laut]
mode=mp3
directory=/var/lib/asterisk/mohmp3

musiconhold Beispiele

exten => 600,1,MusicOnHold()
exten => 700,1,MusicOnHold(laut)

exten => 21,1,WaitMusicOnHold(10)
exten => 21,n,Dial(SIP/21)
exten => 21,n,Hangup

exten => 21,1,Dial(SIP/21,25,m)
exten => 21,n,Hangup