[cisco-voip] ccm 4-2 remote branch attendant console problem

[Erik Erasmus (E)]

I have a customer on 4-2-3 sr3 with central cluster and one branch
both sides using cisco attendant consoles. Had issues with the
attendants for months now. before we were on sr3 we had calls stuck in
the attendant Qs. Cisco promissed this will be fixed in sr3 and we
loaded it -- will wait and see -- lasted a couple of days now. We also
had a problem at the branch attendants. Randomly - once a day or
sometimes twice a day or some times not at all the attendants receives
a call from the pstn on the voice gateway PRIs but the caller and the
called attendant can not hear each other for several seconds -
eventually the voice stream come through and they talk. The attendant
then needs to treansfer the caller to an Ip phone in the branch and
this alos fails - the transfer just doesn't want to happen. When we
reset tcd service and cti manager things start working again. I am
going to open a tac case again but not that hopeful so looking for
ideas. Have already checked:
 
wan - 256 Kbps MPLS circuit from central ccm cluster to branch - looks
good and not highly utilised
QoS - wan and lan looks good
call manager config looks fine because 99.9% of time things work
correctly
attendant PCs and apps fine and latest 4-2-3 sr 3 builds
happens at all three remote attendats so no one PC or port etc problem
lan switches look fine
voice gateway - configured like many others and clocking looks fine
 remote branch runs MOH multicast from flash
 
as said will open a tac case but can not rely on this only - with
stuck in Q it took several weeks before cisco admitted it was a bug.
 
Unforunately the customer does not have sasu or ucss so can not
upgrade to anything and with call centres etc hanging of the CCM
cluster not something one would just tackle lightly one afternoon.
Keeping sharp objects away from myself because I am getting depressed 
 
any ideas 


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