[cisco-voip] Sizing Callmanager Server

[Lelio Fulgenzi]

You should be able to run more than 2500 phones on each server, but the 
problem you will run into is when they start to register, it might take a 
bit longer. You definately need a backup subscriber, but this can be your 
TFTP server. If you're in a financial pinch you can probably get away with 1 
pub, 1 sub and 1 TFTP server to act as a backup sub.

----- Original Message ----- 
From: "Jonathan Charles" <jonvoip at gmail.com>
To: "Reto Gassmann" <voip at mrga.ch>
Cc: <cisco-voip at puck.nether.net>
Sent: Friday, December 07, 2007 8:46 AM
Subject: Re: [cisco-voip] Sizing Callmanager Server


> If you have 5000 phones, you should have at least 3 servers, with 2500
> registered to each of the two subs and the pub backing up each.
>
> However, I would recommend 4, with three subs, with one sub backing up
> another and the pub backing up the other sub.
>
>
>
> Jonathan
>
> On Dec 7, 2007 6:51 AM, Reto Gassmann <voip at mrga.ch> 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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