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New Member

MWI not working

I have CM 3.3(2) SPC with Unity 4.0(2). It is a voicemail only deployment with Ex2K installed on the Unity server.MWIs worked for a couple weeks, then suddenly stopped after new subscribers were created.

I am getting the following warning in the Unity event viewer:

Event Type: Warning

Event Source: CiscoUnity_Miu

Event Category: Warning

Event ID: 526

Date: 12/23/2003

Time: 10:19:27 AM

User: N/A

Computer: NVGS06


Cisco Unity had a problem while attempting to toggle an MWI. This can happen occasionally as part of normal operation, and the MWI request will be retried. If the MWI status remains unchanged for extended periods of time, or if there are many of these warnings from Cisco Unity in a short period of time, there may be an MWI misconfiguration or other problem. See the MWI section in the troubleshooting guide, and contact TAC for assistance if needed.


Thread 0x00000EA0 had a Failure on Port 16 in Method CAvTSPAbstraction::Selsius_SetMWI()

DESCRIPTION: HardFailure from lineDevSpecific.


DestAddress: 1346

Messages: 1

State: ON

ErrorCode: 0x00000102.

DestAddress: 1346

Messages: 1

State: ON

ErrorCode: 0x00000102

I also got the following information from the diag_AV_CS_Mgr trace file:

10:18:58:038,CiscoUnity_Miu,746,2364,-1,MiuGeneral,0,15,CAvTSPAbstraction::Selsius_SetMWI(),HardFailure from lineDevSpecific,0x0000093C

10:18:58:039,CiscoUnity_Miu,749,2364,-1,MiuGeneral,0,15,CAvTSPAbstraction::Selsius_SetMWI(), DestAddress: 1850 Messages: 0 State: OFF ErrorCode: 0x8000004B,0x0000093C

I have verified the basics: There are no partition CSS issues with CallManager, I tested the integration in the TSP and it was successful, and I can dial the MWI on and off DNs from phones and it works properly

Thanks in advance for the help with this


Re: MWI not working

Did you find a fix for these error messages?

New Member

Re: MWI not working

I am having a similar problem after upgrading from 4.0(2) to 4.0(4). Anyone have an idea?

New Member

Re: MWI not working

I have these errors too. Any ideas?


Re: MWI not working

look into this bug:


this problem is seen in 4.0.2 with TSP 7.0.2

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