[cisco-voip] Phones losing connection to the CallManager

[PhilippG]

Have you recently installed a new phone load? We had a similar issue 
with 7941/61 and phone load newer than 8.3.2SR1.

Gheorghe PLETEA wrote:
> Is MPLS, 200 Mbps, never seen more than 50% used.
> The problem is I have multiple messages "CM-aborted-TCP" that means CCM
> closed the TCP session, and I don't understand why.
> 
> Thanks,
> George
> 
> -----Original Message-----
> From: Joe Cisco [mailto:smetsysocsic at gmail.com] 
> Sent: Friday, 18 July 2008 07:51
> To: Gheorghe PLETEA
> Cc: cisco-voip at puck.nether.net
> Subject: Re: [cisco-voip] Phones losing connection to the CallManager
> 
> What's the connection like between the phones and the CM(s)? Local LAN?
> Frame Relay? T1? MPLS? Firewall(s) in between?
> 
> -Joe C.
> 
> On Wed, Jul 16, 2008 at 9:04 PM, Gheorghe PLETEA
> <Gheorghe.PLETEA at team.telstraclear.co.nz> wrote:
>> Hi,
>> I have a problem with some phones losing the connection to the Cisco 
>> CallManager (CCM).
>> A similar problem was posted, few months ago, by Matt Oliver, as 
>> "Phones displaying CM Down during calls".
>>
>> I noticed in the ccm traces many messages that mentioned last reason 
>> of restart as "CM-abort-TCP" (100 messages in 3 days, for 1000
> phones).
>> Can anyone tell me what can be the root causes for these?
>>
>> Thanks,
>> George