[cisco-voip] Sizing Callmanager Server

[Wes Sisk]

Hi Reto,

CM Capacity Planning Tool:
http://www.cisco.com/cgi-bin/CT/CCMCT/ct.cgi

The 5000 is an enforced limit.  It also includes 'virtual devices' such 
as software MTP, MoH server, Route Lists, etc.  Once the CM process on 
the server observes 5000 concurrent registrations it will begin 
rejecting registration requests.

For supporting evidence take a look at CSCsa81331 and CSCeg62328 in bug 
toolkit on Cisco.com
/Wes

Reto Gassmann wrote:
> Hello
> we run our Callmanager 4.2(3) on HP DL 380 G4 Servers (MCS-7854 H2). We have the
> phones configured on two servers. So there are about 2550 Phones per server. If
> one server fails the phones change to the other and the phones sum up to over
> 5000 phones on this single server.
> In Service Parameters Configuration / Cisco CallManager I found an entry called
> Maximum Number of Registered Devices* and the value is 5000. So what happens if
> I have more than 5000 phones??
>
> According to the SRND the 7845 can handle up to 7500 devices. Has any one an
> experience what happens to this if I enable cluster security?
>
> Thanks for help
> Reto
>
>
>
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