asterisk users - Jan 2006 - How many TDM2400P's will a server take?

How many TDM2400P cards can I safelly install in one PC? I'm loking for
answers from whoever has a working scenario with * and a number of cards
higher than one.

Thx,
Juan

__________________________________________________________
Mensagem enviada usando o Webmail da ViaLink ver. 2.7.8

Juan Carlos Castro y Castro wrote:
> How many TDM2400P cards can I safelly install in one PC? I'm loking for
> answers from whoever has a working scenario with * and a number of cards
> higher than one.

Depends on the specs of the server. For example, a quad Xeon will be 
able to service many more interrupts/card/channels than a 500 mHz 
Celeron. :-)

Steve

Ah -- for all intents and purposes, assume I can obtain the most kickass PC
server hardware in the known Universe. So -- any real-life experiences out
there?
> How many TDM2400P cards can I safelly install in one PC? I'm loking for
> answers from whoever has a working scenario with * and a number of cards
> higher than one.
> 
> Thx,
> Juan
__________________________________________________________
Mensagem enviada usando o Webmail da ViaLink ver. 2.7.8

> Juan Carlos Castro y Castro wrote:
> > How many TDM2400P cards can I safelly install in one PC? I'm
loking
for
> > answers from whoever has a working scenario with * and a number of
cards
> > higher than one.
> 
> 
> Depends on the specs of the server. For example, a quad Xeon will be
> able to service many more interrupts/card/channels than a 500 mHz
> Celeron. :-)
> 
Given that one TDM2400P (or even the old 4 port one) generates 1000
interrupts/second, do two cards together have to generate 2000
interrupts/second? Is there, or could there be, a way to synchronise
them so that both cards can be serviced by the one interrupt.

Or is it more the work that needs to be done per interrupt rather than
the number of interrupts that is the problem?

Thanks

James

> Juan Carlos Castro y Castro wrote:
> 
> > Ah -- for all intents and purposes, assume I can obtain the most
kickass
PC
> > server hardware in the known Universe. So -- any real-life experiences
out
> > there?
> 
> We successfully ran four fully-loaded TDM2400Ps in a server here during 
> development testing. The configuration was half FXS and half FXO on each 
> board.
> 
> I would not recommend running that much load in a single server of FXS, 
> because the power supply requirements are too great, but if at least 
> half is FXO then you should be fine. Four TDM2400Ps is the same amount 
> of Zaptel load as a single quad-port T1 card, so most servers should be 
> able to handle it.
Sweet! So -- what are the specs of that server you tested on? Specifically,
the power supply wattage? My intended use here is all FXS, so I suppose a
limit of 2 would be reasonable.

By the way -- don't you think it would be nice if some FXS hardware had some
way to drain power from somewhere else that the PC's power supply? Forgive
me if this idea has already been discussed to death there.

Thanks for the info,
Juan

__________________________________________________________
Mensagem enviada usando o Webmail da ViaLink ver. 2.7.8

> Just figured I'd offer my experience with power restrictions and the 
> 2400P...
> 
> When I purchased a Dell 2800 series tower I found that there were no 
> Molex power connectors in the box so I thought I was out of luck if I 
> wanted to use *any* FXS card (TDM400 or TDM2400) in this box.  I spoke 
> with the guys at Digium about power requirements for the card and ended 
> up buying an external power supply (Altech PS-4512: 
>
http://www.wolfautomation.com/Product.aspx?ProductID=17140&CategoryID=2725)
> , coaxial power connectors and some shrink wrap from Radio Shack.
> 
> I can not remember exactly what the power requirements per Quad FXS 
> module were but I am sure Digium can provide that.  The guys at Digium 
> also mentioned they were looking into an external solution like this for 
> the same reason I was -- I just needed a solution that day :)
> 
> I would assume you could use a solution like this to provide the 
> required power to the X number of cards in a system.  I can post some 
> pictures of my solution if anyone is interested.
Please do. Someone IS interested! :)
> ** Please note, Digium did not suggest this or condone this... **
Caveat emptor, please don't do it at home, we're trained professionals
etc
etc etc. ;)

Juan

__________________________________________________________
Mensagem enviada usando o Webmail da ViaLink ver. 2.7.8