[cisco-voip] Maximum number of T1 on 3845

[Gu Sang Jung]

This is my two cents.

The problem to load more than 10 PRIs will be timing issue.

the currently. Cisco 3845  only support 10 Time clock domain. 
Hence, I designed to use only to max 10 PRIs into One 3845. If you have
different telco clock on one 3845, these number should be limited with
telco
If you provide clock from telco switch, Please make sure this. Otherwise, Fax, or Modem could be has issue. 



----- Original Message ----
From: Lelio Fulgenzi <lelio at uoguelph.ca>
To: Voice Noob <voicenoob at gmail.com>; Mordechai <m.rabinovich at nves.ca>
Cc: cisco-voip at puck.nether.net
Sent: Tuesday, August 26, 2008 3:57:47 PM
Subject: Re: [cisco-voip] Maximum number of T1 on 3845

 
http://www.cisco.com/en/US/prod/collateral/routers/ps259/product_data_sheet0900aecd8057f2e0.pdf
 
i was referred to this by our SE. although the 
table says the 3845 will support 24 T1/PRI ports, the max simultaneous 
calls shows about 450 which is just under 20 ports (when dividing by 23, just 
under 19 when dividing by 24).
 
hope this helps.
 
--------------------------------------------------------------------------------
Lelio 
Fulgenzi, B.A.
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario 
N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX 
(JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
"Bad grammar makes me [sic]" - Tshirt

----- Original Message ----- 
From: Voice Noob 
To: Mordechai 
Cc: cisco-voip at puck.nether.net 
Sent: Tuesday, August 26, 2008 5:54  PM
Subject: Re: [cisco-voip] Maximum number  of T1 on 3845

No they don't. Where in the world did you get that  from????


On Tue, Aug 26, 2008 at 4:47 PM, Mordechai <m.rabinovich at nves.ca> wrote:

3845  supports at least 16, more likely 24 pris if I remember right. We  chose
them over 6509e with CMM blades because they provided appropriate  density
and a newer voip platform.


-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net]  On Behalf Of Matthew Saskin
Sent: Tuesday, August 26, 2008 3:25 PM
To:  Voice Noob
Cc: cisco-voip at puck.nether.net
Subject:  Re: [cisco-voip] Maximum number of T1 on 3845

For one particular  client I've got a series of 8 x 3845's with 12 PRI's
+ 230 configured  xcoding sessions per device and no cpu/memory issues to
speak of.   Nominal CPU utilization is around 35% with peaks of about  50%
during peak call times.

-matt

Voice Noob  wrote:
>
> I think that device will support 12 or 14 PRI's.  Don't remember off hand.
> On Tue, Aug 26, 2008 at 11:20 AM, Aman  Chugh <aman.chugh at gmail.com
>  <mailto:aman.chugh at gmail.com>>  wrote:
>
>
>     Just wanted to know if I can  have 8 T1 pri terminate on Cisco 3845 ,
>     any one  already doing the same , any caveats that I need to be aware
>      of , apart from the AS5300/5400 , what are my other options  to
>     terminate 8 T1 on a single router, I am putting in  6 PVDM2-64 to
>     support this  configuration.
>
>
>     Aman
>
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