[cisco-voip] 4.1delay upon call connection.

[Nick Marus]

7960/7940 phones running ver 7.1 all g711, all local lan, no
transcoding. Just upgraded from 3.2 to 4.1 and started noticing this
problem.  CPU on CM Publishish sits around 8-10% spiking to 80 90 100%
occasionally. Also ,interstingly, the call timer does not start untill
the audio does. Delay is <10ms.



On Apr 11, 2005 10:59 AM, Wes Sisk <wsisk at cisco.com> wrote:
> 2 different issues.
> 
> For Nick,  delay ipphone-ipphone both internal - what is the RTT between
> those phones and CM?  What model phones, i.e. is a transcoder being invoked?
> What is the CPU Utilization on your server?  Pls check for speed/duplex
> mismatch btwn your CM servers and the attached switches.  You should never
> see this much delay between 2 phones.  Only way is either network latency
> cm<->phone or ccm.exe process is backed up with many signals
> 
> For Anthony the network round trip time can definitely cause delays with
> h323 call setup because of the number of packets that have to be exchanged
> and ACK'd.  Fast Start should bring that time down some.
> 
> /Wes
> 
> -----Original Message-----
> From: Nick Marus [mailto:nmarus at gmail.com]
> Sent: Monday, April 11, 2005 10:52 AM
> To: Anthony Mendoza
> Cc: Wes Sisk; cisco-voip at puck.nether.net; Daniel Sexton
> Subject: Re: [cisco-voip] 4.1delay upon call connection.
> 
> My issue occurs on internal to internal ip phone, if that helps.
> 
> On Apr 11, 2005 10:48 AM, Anthony Mendoza <amendoza at niku.com> wrote:
> > I'll check.
> >
> > -Anthony
> >
> > > -----Original Message-----
> > > From: Wes Sisk [mailto:wsisk at cisco.com]
> > > Sent: Monday, April 11, 2005 7:48 AM
> > > To: Anthony Mendoza; Nick Marus
> > > Cc: cisco-voip at puck.nether.net; Daniel Sexton
> > > Subject: RE: [cisco-voip] 4.1delay upon call connection.
> > >
> > > Do you both have h323 fast start enabled?
> > >
> > > /Wes
> > >
> > > -----Original Message-----
> > > From: cisco-voip-bounces at puck.nether.net
> > > [mailto:cisco-voip-bounces at puck.nether.net]On Behalf Of
> > > Anthony Mendoza
> > > Sent: Monday, April 11, 2005 10:43 AM
> > > To: Nick Marus
> > > Cc: cisco-voip at puck.nether.net; Daniel Sexton
> > > Subject: Re: [cisco-voip] 4.1delay upon call connection.
> > >
> > >
> > > Interestingly enough, yes.  We see this between our clusters
> > > in the UK
> > > and US, but were told it was because we are doing this over a VPN and
> > > that extra latency (the few extra ms) is what is causing it.  Also,
> > > since we're doing it in this configuration they refuse to do
> > > any support
> > > since we can't establish and guarantee QoS between the sites.  I'd be
> > > happy to hear if there was a simple/easy fix for this..  our delay is
> > > usually 2-3 seconds.  Between myself and the main IT person
> > > out there we
> > > count on the phone to check delay.
> > > --
> > > Anthony Mendoza
> > >
> > > Nick Marus sent a message, dated 4/11/2005 7:31 AM about:
> > > > Anyoe seen calls have no audio for the first 3-4 seconds of an
> > > > established call with 4.1.2??
> > > >
> > > >
> > > >
> > > > --
> > > > Nick Marus
> > > > nmarus at gmail.com.
> > > > _______________________________________________
> > > > cisco-voip mailing list
> > > > cisco-voip at puck.nether.net
> > > > https://puck.nether.net/mailman/listinfo/cisco-voip
> > > >
> > >
> > >
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> --
> Nick Marus
> nmarus at gmail.com
> 
> 


-- 
Nick Marus
nmarus at gmail.com