[cisco-voip] Maximum number of T1 on 3845
Gu Sang Jung
gusangjung at yahoo.com
Wed Aug 27 12:32:44 EDT 2008
Lelio
It could be for slip issue. Please check the controller side if you connected with two different clock source even same Telco. Some telco provide the clock from the different switch. In this case, It could slip issue.
As you may know, The clock source should be from Telco and Each Slot design to Domain(DSP and Clock Domain). Each Domain could be join/separate with Main mother (slot0)
For the instance, I show the my configuration on Router.
ccm-irva-gwy01#sh network-clocks
Network Clock Configuration
---------------------------
Priority Clock Source Clock State Clock Type
1 T1 1/0 GOOD T1
2 T1 1/1 GOOD T1
3 T1 1/0/0 GOOD T1
4 T1 2/0 GOOD T1
5 T1 2/1 GOOD T1
6 T1 3/0 GOOD T1
7 T1 3/1 GOOD T1
8 T1 3/0/1 GOOD T1
11 Backplane GOOD PLL
Current Primary Clock Source
---------------------------
Priority Clock Source Clock State Clock Type
1 T1 1/0 GOOD T1
Gusang Jung
CCIE VOICE #12972
----- Original Message ----
From: Lelio Fulgenzi <lelio at uoguelph.ca>
To: cisco-voip at puck.nether.net
Sent: Tuesday, August 26, 2008 5:19:29 PM
Subject: Re: [cisco-voip] Maximum number of T1 on 3845
Can you elaborate on this? Is this an issue if you
are connecting to different telcos or just one telco? What do you mean by clock
domains?
--------------------------------------------------------------------------------
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: Gu Sang Jung
To: Lelio Fulgenzi ; Voice Noob ; Mordechai
Cc: cisco-voip at puck.nether.net
Sent: Tuesday, August 26, 2008 8:08 PM
Subject: Re: [cisco-voip] Maximum number of T1 on 3845
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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