Queue spielt immer default musiconhold

[Mona]

Ich versuche unter Asterisk 1.4.7.1 mit mISDN für verschiedene Queues auch verschiedene MOH zu definieren:

/etc/asterisk/extensions:
exten => 123456,n,Answer()
exten => 123456,n,Playback(Intro)
exten => 123456,n,Queue(zentrale1,n)
exten => 123456,n,Queue(zentrale2,n)

/etc/asterisk/queue.conf:
[zentrale1]
music = queue1
strategy = ringall
joinempty = no
leavewhenempty = yes
ringinuse = no
timeout = 10

[zentrale2]
musiconhold = queue2
strategy = ringall
joinempty = no
leavewhenempty = yes
ringinuse = no
timeout = 15

/etc/asterisk/musiconhold.conf:
[queue1]
mode => file
directory => /var/lib/asterisk/sounds/queue1
[queue2]
mode => file
directory => /var/lib/asterisk/sounds/queue2

Egal, was ich eingebe, er startet aber immer die musicclass "default":

mISDN/1-u17 answered SIP/21-08243b90
    -- Executing [123456@from-extern:24] Queue("mISDN/2-u15", "zentrale1|n") in new stack
    -- Started music on hold, class 'default', on channel 'mISDN/2-u15'