[cisco-voip] Unity MWI with multiple CCM clusters using QSig ICT

[Jimmy Pale]

Per the SRND for CallManager:

 

In addition to the option of adding multiple clusters by adding additional
integrations for each new

Unified CM cluster in Cisco Unity, Unified CM supports Annex M.1, Message
Tunneling for QSIG,

which gives administrators the ability to enable QSIG on intercluster trunks
(ICTs) between Unified CM

clusters. When QSIG is enabled on ICTs, Cisco Unity needs to integrate with
only one Unified CM

cluster and designate ports only in this one cluster for turning MWIs on and
off, even when supporting

multiple clusters. The Annex M.1 feature in Unified CM allows for
propagation of the MWI requests

across the ICTs to the proper Unified CM cluster and phone within that
cluster. All calls originating in

other clusters can be forwarded to the Unity server integrated to that one
cluster. There is no need to

designate MWI ports on the other clusters when Annex M.1 is enabled on the
ICT.

 

I have setup the ICT with QSig on two CallManager clusters. It is Unity
version 4.2(1). The cluster that has Unity directly connected is version
4.2(3). The version on the other side of that QSig ICT is 6.0. I can dial
numbers to and from either CallManager cluster without problem. I am finding
that when calling a phone registered to the CallManager that is NOT directly
connected to Unity that the redirecting number is not present and the call
goes to the opening greeting via the CFB, CFNA, or CFA. Redirecting number
is NOT an option when using QSig on the ICT. So how does this work? If I get
rid of the QSig on the ICT and select the redirecting number it goes to the
appropriate VM box everytime. Also, with the ICT using QSig MWI does not
work when a message is left on a phone across the trunk. 

 

Has anyone gotten this to work? Any tips would be great!

 

Thanks!

 

 

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