I have reun some tests from the Monitor and this is what I am seeing:
09:27:18 766610771mS ISDNL3Evt: v=9 stacknum=9 State, new=Initiated, old=NullState id=16588
09:27:18 766610813mS CD: CALL: 251.16586.0 BState=Idle Cut=1 Music=0.0 Aend="Dave(5901)" (0.0) Bend="Line 9" [Line 9] (0.0) CalledNum=94530389 () CallingNum=5901 (Dave) Internal=0 Time=58 AState=Dialled
09:27:18 766610958mS ISDNL3Evt: v=9 stacknum=9 State, new=NullState, old=Initiated id=16588
09:27:18 766610958mS CMLineRx: v=9
CMReleaseComp
Line: type=Q931Line 9 Call: lid=0 id=16588 in=0
Cause=28, Invalid number format
09:27:18 766610959mS CMCallEvt: 0000000000000000 0.16587.0 2539 TargetingEP: RequestEnd c0a82a03000040cc 0.16588.0 2539 Q931 Trunk:9 CHAN=-1
09:27:18 766610959mS CMTARGET: c0a82a03000040ca 251.16586.0 2539 Dave.0: CancelTimer CMTCNoAnswerTimeout
09:27:18 766610959mS CMCallEvt: 0000000000000000 0.16587.0 -1 BaseEP: DELETE CMEndpoint f50ea50c TOTAL NOW=4 CALL_LIST=2
09:27:18 766610959mS CMCallEvt: c0a82a03000040cc 0.16588.0 2539 Q931 Trunk:9 CHAN=-1: StateChange: END=B CMCSOffering->CMCSCompleted
09:27:18 766610961mS CMLOGGING: CALL:2015/04/0109:27,00:00:00,000,5901,O,4530389,94530389,Dave,,,0,,"",0,n/a
09:27:18 766610962mS CD: CALL: 251.16586.0 BState=Disconnecting Cut=1 Music=0.0 Aend="Dave(5901)" (0.0) Bend="Line 9" [Line 9] (0.0) CalledNum=4530389 () CallingNum=5901 (Dave) Internal=0 Time=207 AState=Dialled
09:27:18 766610962mS CD: CALL: 251.16586.0 Deleted
09:27:18 766610963mS CMExtnEvt: Dave: CALL LOST (CMCauseInvalidFormatNumber)
09:27:18 766610963mS CMExtnEvt: Dave: Extn(5901) Calling Party Number(5901) Type(CMNTypeInternal)
09:27:18 766610963mS CMCallEvt: c0a82a03000040ca 251.16586.0 -1 Dave.0: StateChange: END=X CMCSDialled->CMCSCompleted
09:27:18 766610963mS CMExtnEvt: v=0 State, new=PortRecoverDelay old=Proceeding,0,0,Dave
09:27:18 766610964mS CMExtnTx: v=5901, p1=0
CMReleaseComp
Line: type=SIPLine 260 Call: lid=251 id=16586 in=0
Called[94530389] Type=Default (100) Reason=CMDRdirect Calling[5901] Type=Internal Plan=Default
Cause=28, Invalid number format
Timed: 01/04/15 09:27
09:27:18 766610965mS SIP Tx: UDP 192.168.42.3:5060 -> 192.168.42.4:5061
SIP/2.0 484 Address Incomplete
Via: SIP/2.0/UDP 192.168.42.4:5061;branch=z9hG4bK0cdc86285098c19ea
From: <sip:5901@192.168.42.3>;tag=430f33a7d0
Call-ID: 890b44a627a17c29
CSeq: 5515 INVITE
Allow: INVITE,ACK,CANCEL,OPTIONS,BYE,INFO,REFER,NOTIFY,SUBSCRIBE,REGISTER,PUBLISH,UPDATE
Supported: timer,100rel
Server: IP Office 9.1.1.0 build 10
Reason: Q.850;cause=28;text="Invalid number format (address incomplete)"
To: <sip:94530389@192.168.42.3>;tag=1cd5b6e30ef203cc
Content-Length: 0
NCDS | NCSS | APSS - SME | ACIS - SME | ACSS - SME | ACIS - UC | ACSS - UC | APSS - SCOPIA | APDS - SCOPIA | CCENT