[cisco-voip] Remote Site phones rebooting

[Erick Bergquist]

Check your QoS Policy counters and make sure there are no dropped packets on the control class/traffic. I had one situation a long time ago, where they had same setup (a bunch of shared lines) and the bandwidth was fine but the queue-depth needed to be increased to 128 packets instead of the default (64 packets) on the particular policy.  

----- Original Message ----
From: Matt Slaga (US) <Matt.Slaga at us.didata.com>
To: Aman Chugh <aman.chugh at gmail.com>; cisco-voip at puck.nether.net
Sent: Friday, April 20, 2007 7:48:48 AM
Subject: Re: [cisco-voip] Remote Site phones rebooting







 

 


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Check the saturation during an incoming call.  Generally

speaking, you should use up about 1-2kbps per phone for control.  Roughly

16kbps.  Add in your ipsec header and vpn tunnel header information and you are

probably up to 48kbps or more.  When you use a shared line for all devices, you

have SCCP traffic being pushed at the same time to all phones which may be

oversaturating your QoS policy for SCCP.
 



  
 



Do you get this same behavior if you set a single extension,

call and let CFNA initiate?
 



  
 



  
 



  
 







From:

cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On

Behalf Of Aman Chugh


Sent: Friday, April 20, 2007 7:00 AM


To: cisco-voip at puck.nether.net


Subject: [cisco-voip] Remote Site phones rebooting
 








  
 







All,
 












 
 












I have a remote site configured with 8-10 ipphones, the

remote site uses a IPSEC vpn tunnel to register with centeral site.We have

a shared lines configured on all the remote site phones, the issue is whenever

we have calls ringing on these shared lines and no one answers these , the

phone reboots and reregisters, its happening frequently with all phones , I

have checked bandwitdh utilization on my link which is below 50% ,  I have

dedicated b/w in  my qos configuration for call manager sccp traffic.

Has any one seen this or come across this before . CM is 4.1.3
 












 
 












 
 












TIA
 












 
 












Aman
 



















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