[cisco-voip] Calls intermittently complete

[CarlosOrtiz at bayviewfinancial.com]

Different ISP's.    I'll have to check the exact time to unregister and 
the size of the packets because I don't think we are experiencing much if 
any packet loss.





"Jason Aarons \(US\)" <jason.aarons at us.didata.com> 
Sent by: cisco-voip-bounces at puck.nether.net
06/07/2007 02:43 PM

To
<CarlosOrtiz at bayviewfinancial.com>, "Linsemier, Matthew" 
<MLinsemier at apcapital.com>
cc
cisco-voip at puck.nether.net
Subject
Re: [cisco-voip] Calls intermittently complete






Do the two firewalls use the same ISP?  If the two ISPs have packet loss 
then nothing will help. Latency doesn’t effect TCP Skinny keepalives so 
much as packet loss. I think you have to have 3 missed SCCP keepalives for 
un-register. 
 
From: cisco-voip-bounces at puck.nether.net 
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of 
CarlosOrtiz at bayviewfinancial.com
Sent: Thursday, June 07, 2007 1:33 PM
To: Linsemier, Matthew
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Calls intermittently complete
 

Sorry it took so long to send this reply.  This LAN to LAN VPN tunnel is 
between two ASA firewalls using AES 128.  The firewall admin is checking 
to see if any QOS can be done with the ASA at the edge to help.  Does 
anyone have any suggestions that may help with passing voice traffic over 
a VPN?  One user who is using IP Communicator sees hos phone unregister 
from time to time.  I can only guess this is being caused by latency.   

Carlos 


"Linsemier, Matthew" <MLinsemier at apcapital.com> 
06/04/2007 11:59 AM 


To
<CarlosOrtiz at bayviewfinancial.com> 
cc

Subject
RE: [cisco-voip] Calls intermittently complete
 








What equipment are you using for your LAN-to-LAN VPN and are you doing any 
QoS (LFI, marking, etc.) at the edge? 
  
From: cisco-voip-bounces at puck.nether.net 
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of 
CarlosOrtiz at bayviewfinancial.com
Sent: Friday, June 01, 2007 12:03 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Calls intermittently complete 
  

We have an office in the UK that is connected via LAN to LAN VPN.   They 
have about 5 hard Cisco IP phones and a few users using IP communicator 
that are using our Call Mge here in the US for site to site calls.   They 
have complained that calls do not complete sometimes.  I did some testing 
with a guy using IP comminicator and he would see my call coming in but 
was unable to pick it up.  I was watching with the Call Mgr admin and 
noticed that his IP comminicator phone changed status from registered to 
not registered when he attempted to answer the call.  I simultaneously was 
pinging his phone and never saw a lost packet.  A couple of trys later and 
the call completed, we had a conversation but he saw the message "CM, 
Features Failed". 

Anyone have any insight here? 

Thanks, 

Carlos 

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