[Asterisk-Users] No incoming calls on skinny phone

[Remco Barende]

Hi list!

My skinny phone can make outgoing calls but incoming calls just keep 
ringing for the calling end but the phone that actually should ring 
doesn't ring at all.

I guess I have something messed up with the dial command.

I have this in skinny.conf:
[z4040]
device=SEP000000000000 (actual number removed)
nat=0
callerid="z4040" <105>
callwaiting=0
mailbox=199
transfer=1
context=intern
line => 105


I have this in extensions.conf
exten => 105,1,Dial(Skinny/105 at z4040,30,tr)
exten => 105,2,Playback(invalid)
exten => 105,3,Hangup
exten => 105,102,Voicemail(199)
exten => 105,103,Hangup


The asterisk console displays this at startup:
     -- Setting mailbox '199' on z4040 at 105
     -- Allocating Skinny subchannel '0' on 105 at z4040
     -- Allocating Skinny subchannel '1' on 105 at z4040

When I dial the device this shows up on the console:
Found device: z4040
     -- skinny_call(Skinny/105 at z4040-2)

But the phone doesn't ring.

I don't understand a thing about the skinny protocol or the line stuff so 
maybe it's something obvious that I missed.

Thanks!!!