[Serusers] Call connections take too long

[Klaus Darilion]

Hi!

Sorry, I haven't understand your setup! Please take a look at the
follwing figure. Where is the great delay? Between which messages?

UA 1                    proxy                      UA2
 |                        |                         | 
 |1. INVITE               | 2. INVITE               | 
 | -------------------->  | ----------------------> | 
 |                        |                         | 
 | 4. 180 Ringing         | 3. 180 Ringing          |
 | <-------------------   | <---------------------  | 
 |                        |                         | 
 |                        |                         | 
 | 6. 200 OK              | 5. 200 OK               | 
 | <--------------------  | <---------------------  | 
 |                        |                         | 
 |                        |                         | 
 | 7. ACK                 | 8. ACK                  | 
 | ------------------>    | --------------------->  |
 |                        |                         | 
 |                        |                         | 
 

regards,
Klaus


> -----Original Message-----
> From: jerk face [mailto:jerkface2098 at yahoo.com] 
> Sent: Monday, December 22, 2003 9:01 PM
> To: Klaus Darilion
> Cc: serusers at lists.iptel.org
> Subject: RE: [Serusers] Call connections take too long
> 
> 
> My setup:
> I use a proxy for dialing.  The proxy has a static IP
> address.  The callee can be behind a NAT or on a
> static IP address and the call will take a long time
> to connect.  
> I have watched the traffic at the caller end and it is
> the same (long pause).
> 
> Any other possibilities?
> 
> Thank you for your time.
> 
> 
> --- Klaus Darilion <darilion at ict.tuwien.ac.at> wrote:
> > That all depends on your setup.
> > 
> > Do you use direct IP dialing or do you use a proxy?
> > Where is the proxy -
> > in your local network or somewhere in the public
> > internet? Where is the
> > callee located - same network or somewhere else? It
> > might be also useful
> > to watch the network traffic at the callees site and
> > at the ser proxy.
> > 
> > Klaus
> > 
> > > -----Original Message-----
> > > From: jerk face [mailto:jerkface2098 at yahoo.com] 
> > > Sent: Monday, December 22, 2003 6:23 PM
> > > To: Klaus Darilion
> > > Cc: serusers at lists.iptel.org
> > > Subject: RE: [Serusers] Call connections take too
> > long
> > > 
> > > 
> > > I ran ngrep -d eth0 X.X.X.X (Where X.X.X.X is my
> > IP
> > > address) and I didn't get a lot of DNS queries.  I
> > > couldn't see any activity on my IP address until I
> > > heard a ring (after about 15-20 seconds).
> > > 
> > > What would be some other causes for this problem?
> > > 
> > > Thank you for your time.
> > > 
> > > --- Klaus Darilion <darilion at ict.tuwien.ac.at>
> > wrote:
> > > > There can be a lot of issues, e.g. I often find
> > long
> > > > call setup delays
> > > > caused by several DNS lookups (either by the
> > client
> > > > or the proxy) which
> > > > may take some time if the DNS server is slow.
> > > > 
> > > > You would have to use ethereal (or other packets
> > > > sniffer) and watch all
> > > > traffic related to your call to resolve this
> > issue.
> > > > 
> > > > Klaus
> > > > 
> > > > > -----Original Message-----
> > > > > From: jerk face
> > [mailto:jerkface2098 at yahoo.com] 
> > > > > Sent: Monday, December 22, 2003 6:05 PM
> > > > > To: serusers at lists.iptel.org
> > > > > Subject: [Serusers] Call connections take too
> > long
> > > > > 
> > > > > 
> > > > > I have noticed that when I attempt to call
> > another
> > > > > user it takes a long time to make the
> > connection.
> > > > > 
> > > > > I'm guessing this is a configuration issue
> > since I
> > > > > have an ADSL connection.  Does anybody know
> > how I
> > > > can
> > > > > solve this problem?
> > > > > 
> > > > > Thank you for your time.
> > > 
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> 
> 
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