CME Integration with Unity Connection using SIP, MWI not sending

[DhaneeshKarthikeyan]

Hi Team,
I recently integrated CME with Unity Connection using SIP -But  MWI is not sending to phones.

Phones are using SCCP to register with CME.

But when we check the MWI indicator, it always shows off.

Voicemails are coming to inbox, we can see the counts. When user dials, it says the mail counts and they can listen the voice messages.
Please advise if It works with SIP integration  with unity connection and  phones using SCCP to register with cme.

[Brad Magnani]

HI @DhaneeshKarthikeyan , you'll first want to confirm that Unity is sending the MWI on/off (SIP NOTIFY) over the SIP trunk, and if so, how is CME responding to those?

In Unity Connection Serviceability>Trace>Macro Traces enable the MWI issue related traces.  Then under Trace>Micro Traces, enable all levels of Notifier.  Make sure all messages are marked read, then leave a new message and pull from RTMT:

Connection Conversation Manager
Connection Notifier

Look for the outbound SIP NOTIFY and see what CME's response is to it.  That should give you some direction. 

Tech Note for configuration reference: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/12x/integration/guide/cucme_sip/b_12xcucmesip.html 

[Elliot Dierksen]

I think this is the key piece. I had to dig for this as it has been a while since I did anything with CME.

sip-ua
mwi-server ipv4:192.168.66.253

[DhaneeshKarthikeyan]

Hi Eliot,
Do we need to point it to CXN pub or SUB ,?
I ham using Sub and in below format.
sip-ua
mwi-server ipv4:10.123.123.123 expires 3600 port 5060 transport tcp unsolicited

[Elliot Dierksen · Accepted solution]

I would point it at the publisher. If you wanted to see what is going on, you could watch the debug output from 'debug ccsip mess' while there is an MWI state transition.

[DhaneeshKarthikeyan]

Thanks Elliot, 
MWI start working after I changed the MWI server IP to Publisher, seems CME wil not accept the notify message from subscriber and it only accepts from publisher.

Thanks a lot your your help and time.

[Brad Magnani]

You'll still want to investigate further why CME isn't accepting NOTIFY's from the CUC sub.  If your publisher ever went down, the subscriber takes over as "Primary" role holder and will be responsible for sending MWI on/off.  CME should accept MWI requests from either server when the time comes.