[cisco-voip] Troubleshooting Help

Paul Choi asobihoudai at yahoo.com
Thu Jul 5 21:02:25 EDT 2007


Did you run any q931 debug on your gateway at all?

--- Todd Franklin <toddnh65 at gmail.com> wrote:

> Had the phone company in late today.  They are
> convinced it was not them.  I
> guess they can see all the way to their CSU/DSU and
> all the way back to the
> CO, no errors at all all day long.  So they are
> pointing the finger at my
> internal network!  One thing I did see, is that the
> CPU utilization of the
> 2801 with the PRI hit as high as 80% early this
> morning.  I am thinking this
> could have done it.  (This 2801 is also the def
> gateway for the network,
> though the network is quite small, only about 60
> total PCs and phones).
> 
> So I guess time to open a case with TAC.
> 
> 
> 
> On 7/5/07, kent <nws at fredf.org> wrote:
> >
> > I had a similar issue to the one your describing,
> The good news, well
> > maybe... I got to trouble shoot it while the 1000
> user call center was
> > tring to answer the calls.  (Talk about fun!) 
> anyway the problem came
> > down to a bad media termination point.  After x
> number of calls hit,
> > then the weird ness started.  1 way audio etc.
> >
> > also, there are lots of known issues with the 12.3
> train and weird audio
> > problems.  TAC suggests you get up to the 12.4
> code to fix most of the
> > voice stuff.  You might just have a bad dsp
> module.   Also, if you have
> > MTP required for your gateway.  (not sure if thats
> an option for mgcp
> > like h323 at the moment)  you probably don't need
> to use them, but
> > depends on your environment.
> >
> > Also, I know theres a rush ususally to fix the
> issue, when it happens,
> > but alot of times if you can reproduce the problem
> with your phone and
> > run a sniffer, you might be able to see whats
> happening buy the ip
> > address of the streams.
> >
> > Also, TAC said on the 12.3 code, that putting the
> user on hold and then
> > taking them back off, might correct it to.    but
> I cheated, I removed
> > the MTP option and upgraded to 12.4 code.  :)
> >
> >
> >
> >
> >
> >
> > Paul Choi wrote:
> > > Is your 2801 receiving the digits from the LEC
> > > properly? Is the PRI cable damaged at all?
> > >
> > > --- Todd Franklin <toddnh65 at gmail.com> wrote:
> > >
> > >
> > >> Version 12.3(11)T9
> > >> MGCP
> > >>
> > >> On 7/5/07, Voll, Scott <Scott.Voll at wesd.org>
> wrote:
> > >>
> > >>>  VGW = Voice Gateway = 2801 with PRI
> > >>>
> > >>>
> > >>>
> > >>> What version on the 2801 with PRI?  Running
> H323
> > >>>
> > >> or MGCP
> > >>
> > >>>  ------------------------------
> > >>>
> > >>> *From:* Todd Franklin
> [mailto:toddnh65 at gmail.com]
> > >>> *Sent:* Thursday, July 05, 2007 10:19 AM
> > >>> *To:* Voll, Scott
> > >>> *Cc:* cisco-voip at puck.nether.net
> > >>> *Subject:* Re: [cisco-voip] Troubleshooting
> Help
> > >>>
> > >>>
> > >>>
> > >>> The PRI terminates on a separate 2801.  My CCM
> is
> > >>>
> > >> a 4.2sr5a (from what I
> > >>
> > >>> can gather!)  I don't know what VGW means, is
> the
> > >>>
> > >> VGW something to do with
> > >>
> > >>> the 2801?  I have no errors about a lack of
> DSPs,
> > >>>
> > >> when we did run low on
> > >>
> > >>> them, that usually got logged in CCM.  There
> is no
> > >>>
> > >> firewall between CCM and
> > >>
> > >>> the PRI.
> > >>>
> > >>> Thanks for the ideas!  I am now looking and
> > >>>
> > >> digging!!
> > >>
> > >>>  On 7/5/07, *Voll, Scott* <Scott.Voll at wesd.org
> >
> > >>>
> > >> wrote:
> > >>
> > >>> Where is the PRI terminating on?  the same
> 2801?
> > >>>
> > >>>
> > >>>
> > >>> What version of CM / VGW w/ PRI?
> > >>>
> > >>>
> > >>>
> > >>> Do you have enough DSP's?
> > >>>
> > >>>
> > >>>
> > >>> What codec is being ran in region and VGW?
> > >>>
> > >>>
> > >>>
> > >>> Any Firewalls between phone / CM / VGW?
> > >>>
> > >>>
> > >>>
> > >>> Scott
> > >>>
> > >>>
> > >>>  ------------------------------
> > >>>
> > >>> *From:* cisco-voip-bounces at puck.nether.net
> > >>>
> > >> [mailto:cisco-voip-bounces at puck.nether.net]
> > >>
> > >>> *On Behalf Of *Todd Franklin
> > >>> *Sent:* Thursday, July 05, 2007 9:58 AM
> > >>> *To:* cisco-voip at puck.nether.net
> > >>> *Subject:* [cisco-voip] Troubleshooting Help
> > >>>
> > >>>
> > >>>
> > >>> Hey everyone.  I will try to keep this short,
> but
> > >>>
> > >> supply as much
> > >>
> > >>> information as possible.
> > >>>
> > >>> On june 28th, and again today on July 5, we
> have
> > >>>
> > >> had this issue:
> > >>
> > >>> If you are outside, and call in on a line that
> > >>>
> > >> comes in on our PRI, the
> > >>
> > >>> person receiving the call cannot hear you at
> all.
> > >>>
> > >> Yet you can hear them
> > >>
> > >>> perfectly.
> > >>> If you are outside, and call in on a line that
> > >>>
> > >> comes in our PRI with an
> > >>
> > >>> automated attendant, no input is accepted. 
> (i.e.
> > >>>
> > >> Press 1 for this, 2 for
> > >>
> > >>> that, if you press a key, the greeting just
> keeps
> > >>>
> > >> going.  If you dial an
> > >>
> > >>> extension, the greeting just keeps going).
> > >>> If you are inside, and dial out (we use a 9 to
> get
> > >>>
> > >> an outside line, this
> > >>
> > >>> puts you out on the PRI), the phone will show
> that
> > >>>
> > >> the call is connected,
> > >>
> > >>> yet you cannot hear anything at all.  No phone
> > >>>
> > >> ring, nothing.
> > >>
> > >>> Today, I pressed 9, and dialed the automated
> > >>>
> > >> weather phone in town, I got
> > >>
> > >>> connected to an Engineering firm 15 miles
> away.  I
> > >>>
> > >> hung up, dialed the same
> > >>
> > >>> weather phone, and got the very same
> Engineering
> > >>>
> > >> firm 15 miles away.
> > >>
> > >>> Also today, occasionally I would pick up my
> > >>>
> > >> handset, and be right in the
> > >>
> > >>> middle of someone's phone conversation.
> > >>> In both cases, if you call in to a line that
> is
> > >>>
> > >> POTS going into a 2801,
> > >>
> > >>> you are fine.  And if you call out using a
> POTS
> > >>>
> > >> line, you are fine (even
> > >>
> > >>> though the POTS outbound line is on a 2801).
> > >>>
> > >>> All this led me to believe it was a phone
> company
> > >>>
> > >> issue, yet the assure me
> > >>
> > >>> it was definitely not.  I had not rebooted my
> CCM
> > >>>
> > >> in over a year, so I
> > >>
> > >>> rebooted it.  Both instances, in less than an
> > >>>
> > >> hour, things go back to
> > >>
> > >>> normal, but needless to say, the issue is
> killing
> > >>>
> > >> me!  Where would I start
> > >>
> > >>> to look for ideas on what is happening??
> > >>>
> > >>> Would appreciate any help at all!
> > >>>
> > >>>
> > >>>
> > >>>
> _______________________________________________
> > >>>
> > >> cisco-voip mailing list
> > >> cisco-voip at puck.nether.net
> > >>
> https://puck.nether.net/mailman/listinfo/cisco-voip
> > >>
> > >>
> > >
> > >
> > >
> > >
> > >
> >
>
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> > >
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> > >
> > >
> >
> >
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