[cisco-voip] Phone limits per server

[Matthew Saskin]

There is a service parameter that will keep you from allowing more than 5000
phones to register to a single server.  It can be changed, but should only
be done so if you're running a server capable of supporting more than 5K
phones (and have run the scenarios through the capacity tool, etc, caveat
emptor)

Code Red/Code Yellow are different scenarios under which CallManager will
either start throttling call attempts (code yellow) or outright rejecting
call attempts (code red) in an attempt to recover from some particular
problem.  I've seen it occur primarily over high CPU usage, but I'm sure
Ryan and/or Wes can/will chime in with more specifics :)

Matthew Saskin
msaskin at gmail.com
203-253-9571

July 18, 2010 - 1500m swim (in the hudson), 40k bike, 10k run
Please support the Leukemia & Lyphoma Society
http://pages.teamintraining.org/nyc/nyctri10/msaskin


On Wed, Mar 10, 2010 at 3:40 PM, Jason Aarons (US) <
jason.aarons at us.didata.com> wrote:

>  In 7x isn’t there a service parameter around 5000 lines, right (going
> from memory) ? So you couldn’t have 5000 7962s with 6 lines on each before
> hitting that trigger. As I recall it called something like code red, etc.
>
>
>
> *From:* cisco-voip-bounces at puck.nether.net [mailto:
> cisco-voip-bounces at puck.nether.net] *On Behalf Of *Lelio Fulgenzi
> *Sent:* Wednesday, March 10, 2010 9:45 AM
> *To:* Jeremy Rogers
> *Cc:* cisco-voip at puck.nether.net
> *Subject:* Re: [cisco-voip] Phone limits per server
>
>
>
> The only thing I've heard is that you have to change a service parameter to
> up the 7845 from 5000 to 7500 devices and that it's an extra licensing cost.
> When you purchase CUCM for 7845 it comes with only 5000 "licenses". To be
> legit, you need to purchase the RTU license to go up to 7500.
>
> I've heard nothing about not using a 7845 for 4000 devices. We currently
> run over 3500 devices on each of our 4 7845s (5 year old hardware too) and
> have not had any issues (so far, touch wood).
>
> With each revision of hardware, I suspect they would handle 7500 devices
> without blinking.
>
>
> ---
> Lelio Fulgenzi, B.A.
> Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
> (519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> Cooking with unix is easy. You just sed it and forget it.
>                               - LFJ (with apologies to Mr. Popeil)
>
>
> ----- Original Message -----
> From: "Jeremy Rogers" <Jeremy.Rogers at ip-soft.net>
> To: cisco-voip at puck.nether.net
> Sent: Wednesday, March 10, 2010 9:02:05 AM GMT -05:00 US/Canada Eastern
> Subject: [cisco-voip] Phone limits per server
>
>
> 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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