asterisk users - Dec 2009 - Avaya 9650 SIP phone and dial timeout

Hi!

Have a weired problem with Avaya 9650 phones:

extensions.conf
exten => 0317998975,hint,SIP/0317998975
exten => 0317998975,1,Goto(0317998975-${DEVICE_STATE(SIP/0317998975)},1)
exten => 0317998975,2,Hangup()
exten => 0317998975-INUSE,1,VoiceMail(0317998975 at inputinterior.se,bs)
exten => 0317998975-INUSE,2,Hangup()
exten => 0317998975-NOANSWER,1,VoiceMail(0317998975 at inputinterior.se,us)
exten => 0317998975-NOANSWER,2,Hangup()
exten => 0317998975-NOT_INUSE,1,Dial(SIP/0317998975,2)
exten => 0317998975-NOT_INUSE,2,Goto(0317998975-${DIALSTATUS},1)
exten => 0317998975-NOT_INUSE,3,Hangup()

I know that I have a very short dial timeout, just for testing purposes.

If i call 0317998975 and that extension is "free":
The 9650 phones rings for 2 seconds.

 == Using UDPTL CoS mark 5
 -- Executing [0317998975 at inputinterior.se:1]
Goto("SIP/0317998985-00000031", "0317998975-NOT_INUSE,1") in
new stack
 -- Goto (inputinterior.se,0317998975-NOT_INUSE,1)
 -- Executing
[0317998975-NOT_INUSE at inputinterior.se:1]
Dial("SIP/0317998985-00000031", "SIP/0317998975,2") in new
stack
 == Using UDPTL CoS mark 5
 -- Called 0317998975
 -- SIP/0317998975-00000032 is ringing
 -- Nobody picked up in 2000 ms
 -- Executing [0317998975-NOT_INUSE at inputinterior.se:2]
Goto("SIP/0317998985-00000031", "0317998975-NOANSWER,1") in
new stack
 -- Goto (inputinterior.se,0317998975-NOANSWER,1)
 -- Executing [0317998975-NOANSWER at inputinterior.se:1]
VoiceMail("SIP/0317998985-00000031", "0317998975 at
inputinterior.se,us") in
new stack
 --  Playing
'/var/spool/asterisk/voicemail/inputinterior.se/0317998975/unavail.slin'
(language 'se')

And as u can see the systems plays my unavailable message but,
the 9650 phones keep ringing, forever, or at least until I lift 
and put down the handset.

Any ideas how i cant "stop" the ringing?

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