[cisco-voip] Quality Issues

[Duane Priebe]

I have been having an issue at 1 of my 7 locations with quality for
about a month now.  The users there have been pretty good about getting
me good information like time/date, if the problem occurred when they
were making or receiving a call, npa/nxx of the number if they were
making the call, and checking to make sure the other end was not on a
cell phone.  

 

The issue seems to happen two or three times a day with no particular
time pattern.  It has happened both calling outside the location as well
as receiving calls into the location (never internal calls).  The
individual on the other end (always outside of the location) describes
the issue almost always as "it sounds like your on a cell phone" either
breaking up or static.  The call is then terminated and reissued and
then seems to work fine.  They have been filing a QRT report and the
jitter seems to be in the upper 40's most of the time when it occurs.  I
monitor network traffic closely and my WAN links are never more than 50%
utilized.  I am kind of at a loss here because they are configured
nearly exactly as all my other locations with the same QOS, hardware,
firmware versions, and WAN architecture (MPLS network matching 90% of my
QOS settings).  Any suggestions would be most helpful, thanks in
advance!

 

CM v4.1(3)sr3

Duane A. Priebe 
Network Admin/IT Manager 



 

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