asterisk users - Sep 2005 - Not enough lines available for Asterisk implemetation

On Thu, 2005-09-08 at 16:26 +0200, Simone Cittadini wrote:
> Is it true ?
> My boss is just asking me if it is possible to stuck 4* TE411P in a 
> single server, for a total of 480 lines, someone can assure me it is 
> possible/impossible (manageable/unmanageable) from real-life experience ?
> 
You might want to offload some of that PRI termination to an external
device such as a Cisco AS53XX, Lucent MAX TNT, Audio Codes or Redfone
fonebridge device and then trunk it to your Asterisk servers. But
putting more then 2 quad cards in a single server is not safe. 1 per
server would be more acceptable.

This link might be helpful to you:
http://www.voip-info.org/tiki-index.php?page=Asterisk+at+large

Good luck.

Hi all

I am looking at implementing asterisk at a company with two ISDN bricks (60 
lines). I know that the VoIP will absorb at least on brick worth of lines but 
that still leaves me with a need for 30 ISDN lines. As far as I can tell most 
of the Digicom cards have 4 FXS ports and I've read on this list that at
most
two could coincide in a box simultaneously without causing an interupt flood. 

1) is my info okay so far?
2)What would be the best way for be to implement the other 22 lines? Is there 
hardware I'm not aware of?

-- 
Regards

Wayne Gemmell

Tel & Fax: (011) 894-4081
Cell  : 072 836 4325
Email  : wayne@terico.co.za

> 
>that still leaves me with a need for 30 ISDN lines. As far as I can tell
most
>of the Digicom cards have 4 FXS ports and I've read on this list that at
most
>two could coincide in a box simultaneously without causing an interupt
flood.
>
>  
>
Is it true ?
My boss is just asking me if it is possible to stuck 4* TE411P in a 
single server, for a total of 480 lines, someone can assure me it is 
possible/impossible (manageable/unmanageable) from real-life experience ?

thanks
*

Wayne Gemmell wrote:
> Hi all
> 
> I am looking at implementing asterisk at a company with two ISDN bricks (60
> lines). I know that the VoIP will absorb at least on brick worth of lines
but
> that still leaves me with a need for 30 ISDN lines. As far as I can tell
most
> of the Digicom cards have 4 FXS ports and I've read on this list that
at most
> two could coincide in a box simultaneously without causing an interupt
flood.
> 
> 1) is my info okay so far?
> 2)What would be the best way for be to implement the other 22 lines? Is
there
> hardware I'm not aware of?
Wayne, hi;

I guess what you're describing is 2 x ISDN30 connections (around 2Mbit/s 
each ?)

I'm not familiar with the SA telephone system, but in the rest of the 
world (more or less) the card you'd need is the Digium TE110P which is 
switchable between T1 (24 channel) and E1 (30 channel) ISDN.

jd

-- 

John Daragon                                          john@argv.co.uk
argv[0] limited
Lambs Lawn Cottage,  Staple Fitzpaine,  Taunton,  TA3 5SL,  UK
v +44 (0) 1460 234068   f +44 (0) 1460 234069   m +44 (0) 7836 576127

We run many servers with 4 Quad cards and have no problems, SANGOMA works
great for this !!



-----Original Message-----
From: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of asterisk
groups
Sent: Thursday, September 08, 2005 6:12 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] MAX PRI for single server (was: Not
enoughlines available for Asterisk implemetation)

On Thu, 2005-09-08 at 16:26 +0200, Simone Cittadini wrote:
> Is it true ?
> My boss is just asking me if it is possible to stuck 4* TE411P in a 
> single server, for a total of 480 lines, someone can assure me it is 
> possible/impossible (manageable/unmanageable) from real-life experience ?
> 
You might want to offload some of that PRI termination to an external
device such as a Cisco AS53XX, Lucent MAX TNT, Audio Codes or Redfone
fonebridge device and then trunk it to your Asterisk servers. But
putting more then 2 quad cards in a single server is not safe. 1 per
server would be more acceptable.

This link might be helpful to you:
http://www.voip-info.org/tiki-index.php?page=Asterisk+at+large

Good luck.

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On Thu, 8 Sep 2005, Wayne Gemmell wrote:
> Hi all
> 
> I am looking at implementing asterisk at a company with two ISDN bricks (60
> lines). I know that the VoIP will absorb at least on brick worth of lines
but
> that still leaves me with a need for 30 ISDN lines. As far as I can tell
most
> of the Digicom cards have 4 FXS ports and I've read on this list that
at most
> two could coincide in a box simultaneously without causing an interupt
flood.
> 
> 1) is my info okay so far?
> 2)What would be the best way for be to implement the other 22 lines? Is
there
> hardware I'm not aware of?
What do you mean by a brick?

If your incoming lines are ISDN primary rates then you simply connect 
directly to a primary rate ISDN card in your Asterisk box.  A single board 
from Digium can handle up to 4 primary rates.

Give us a call on 021 6575160 or 011 6212270 and we can discuss further.

Regards,
Steve Davies

Did you search the maillist archives for hybrid echo cancellation?
> Hello
>
> In the following setup:
> call coming from a pstn line -> into FXO card -> asterisk -> SIP
phone
>
> i get an incredible loud echo in the SIP phone (about 0,5-1s) (everything 
> i
> speak into SIP phone microphone i hear in its speaker). The person calling
> from PSTN is not getting any echo.
>
> Which piece of the call could be causing the trouble so i can look into 
> it?
>
> thanks,
> Marek