[cisco-voip] Phones losing connection to the CallManager

[Ryan Ratliff]

You'd need packet captures and ccm traces to fully understand this.    
Make sure the captures are taken at both the phone and the CCM.

-Ryan

On Jul 17, 2008, at 5:58 PM, 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
>
> Gheorghe PLETEA
> Network Specialist
> TelstraClear Limited
> Phone: +64 4 920 3023
> Mobile: +64 29 920 3023
> Email: gheorghe.pletea at team.telstraclear.co.nz
>
>
>
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