[cisco-voip] Phone limits per server

[Lelio Fulgenzi]

When you say massive performance hit, what do you mean? Just a rough guess. 

Case in point, we have Unity Express boxes, IPCCx boxes. Does each CTI port shave the load capacity down by 100 phones or something? 

We also have a Cistera appliance that uses CTI super provider to monitor all 8000 phones or so. 



--- 
Lelio Fulgenzi, B.A. 
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1 
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN) 
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----- Original Message ----- 
From: "Wes Sisk" <wsisk at cisco.com> 
To: "Jeremy Rogers" <Jeremy.Rogers at ip-soft.net> 
Cc: cisco-voip at puck.nether.net 
Sent: Wednesday, March 10, 2010 9:42:53 AM GMT -05:00 US/Canada Eastern 
Subject: Re: [cisco-voip] Phone limits per server 

SRND is 'guidance'. The most respected source today are the capacity calcaulators which are currently only accessible to partners: 
http://tools.cisco.com/cucst 
http://www.cisco.com/cgi-bin/CT/PGWCT/ct.cgi 

Maximum load is determined by devices, number of lines, and features being invoked. Anything using CTI is still a massive performance hit. 

Net: it is not as simple as server X supports Y devices. 

/Wes 

On Wednesday, March 10, 2010 9:02:05 AM, Jeremy Rogers <Jeremy.Rogers at ip-soft.net> wrote: 





According to the SRND for 6.1 you can have a max of 7500 phones on a 7845, however in side discussions Ive heard mention that this should be limited to no more than 4000 phones on a server in large deployments. Is that the case and is there documentation to back it up? 

Also, since each gateway endpoint is a “device” is there a major weighting difference between FXO/FXS endpoints and PRI endpoints for capacity planning? 



Jeremy Rogers 

Network Management 




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