System Monitor app should tell you what's wrong.
Call tab: select Targeting and Voicemail Client.
A successful call with button 1 pressed Should look something like this: (using Action type
Transfer , not "Normal Transfer" )
20:31:11 5834987mS LVM(audio): Audio3: AutoAttIntroNode:

TMFHit: digit:
1
20:31:11 5834987mS LVMail: Client3: AutoAction: called: BlindTransfer
<GroupName>
20:31:11 5834987mS LVMail: Client3: Transfer Status: Idle -> ReleaseWait
20:31:11 5834987mS LVMail: Client3: SendMsg: CMTransfer to CM
20:31:11 5834988mS LVM(silence): Client3: DTMFDigit: Restart silence detection
20:31:11 5834989mS CMTARGET: 0ad7d4c7480003f1 251.1207960561.0 3
<Name of Ringing Extension>.0: ADD TARGET (N): number=Hotellet type=100 depth=1 nobar=1 setorig=1 ses=0