romantarasov

I have a problem with IP Office 2.0. The configuration is following:
IP403 v2.0(16) and two POTS 8+ v4.0(16). It is connected by h.323-trunk with Definity R11.

The problem is that system periodically crashes in such a manner, that I have no dialtone on the analog phones, when they goes off-hook. If I try to dial to one of them from Definity, I have a timeut on the trunk and therefore that attempts fails. In the IP Office monitor I see following records:
PRN: AudioEndPoint::AEPTimer RECVD TIMEOUT ac1916b9,49424 ac1914bb,16188

and, sometimes, records like:
12246114mS H323Evt: v=0 stacknum=0 State, new=NullState, old= id=-1
12246115mS H323Evt: v=0 stacknum=0 State, new=Present, old=NullState id=5
12246115mS PRN: Fast Start
12246123mS PRN: Media Channel 172.25.20.187, 17440
12246434mS RES: Fri 28/11/2003 18:07:36 FreeMem=6420692(17) CMMsg=2 (4) Buff=100 631 457 1428 Links=10507
12255945mS H323Evt: v=0 stacknum=0 State, new=NullState, old=Present id=5
12256445mS RES: Fri 28/11/2003 18:07:46 FreeMem=6429032(16) CMMsg=2 (4) Buff=100 631 456 1428 Links=10549
12256596mS PRN: H323Sap::NullStateDLData --- Non-setup message addresses to a non-existing call. Message ignored.
12256597mS PRN: H323Sap::NullStateDLData --- Non-setup message addresses to a non-existing call. Message ignored.
12261433mS RES: Fri 28/11/2003 18:07:51 FreeMem=6430624(16) CMMsg=2 (4) Buff=100 631 456 1428 Links=10550
12286059mS PRN: H323Sap::NullStateDLData --- Non-setup message addresses to a non-existing call. Message ignored.
12299927mS RES: Fri 28/11/2003 18:08:31 FreeMem=6436568(17) CMMsg=2 (4) Buff=100 631 454 1428 Links=10553
12300778mS PRN: H323Sap::NullStateDLData --- Non-setup message addresses to a non-existing call. Message ignored.
12300779mS PRN: H323Sap::NullStateDLData --- Non-setup message addresses to a non-existing call. Message ignored.
12300946mS RES: Fri 28/11/2003 18:08:32 FreeMem=6430624(16) CMMsg=2 (4) Buff=100 631 454 1428 Links=10550

The trunk between IP Office is administered like in document "How to configure an H.323 IP trunk between an Avaya™ IP600 Internet Protocol Communication Server and Avaya™ IP Office Server" at support.avaya.com.

So, system crashes 2-3 times a day. What will you advise me to do?