[Asterisk-Users] quad t1 / 1U rack server combos

[Chad Osmond]

>From what I understand (From Sangoma's tech support) and having a IBM
x306 SCSI system with an A102u I believe that the system will scale up
to 4xT1's easily.
With a full T1 of traffic coming in and playing music on hold, the CPU
was at 7% with no transcoding.
 
Sangoma cards are supposed to place less draw on the interrupts and
offer some new direct writing to DMA in their A104 cards. You may want
to give them a call (Scott or Nenad are the two best people to speak
with). 
 
>From Sangoma README.asterisk:
 Voice data is channelized and grouped into  8 byte chunks in HARDWARE.
Each voice   channel is then DMAed directly into the ZAPTEL  buffers.
Thus there is ZERO copy from HARDWARE  to ZAPTEL, resulting in better
performance and  scalability.
 
 
It sounds to me like that would be once advantage over Digiums cards.
They also have Hardware PRI functions that are passed directly to
libpri.
http://sangoma.com/linux/README.asterisk
 
Hope that helps.
 
Chad

________________________________

From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Damon
Estep
Sent: August 16, 2005 12:33 PM
To: asterisk-users at lists.digium.com
Subject: [Asterisk-Users] quad t1 / 1U rack server combos



It is amazing to me at this point that there is not an official Digium
list of supported servers (including 1u models!). Clearly the number 1
issue with the Digium PRI cards is the server that they are used in.

 

The new cards even go as far as listing server that DO NOT work on the
Digium site!

 

The wiki references are old and do not have any testing parameters.

 

C'mon guys! Certify a few current model servers and be done with it.

 

Without that information I must again ask the question;

 

What 1u server combos work with the new quad pri cards UNDER LOAD (more
than 75% channel use). Every user that buys a Digium PRI card should not
have to play hit or miss with 2 or 3 servers that cost more than the
card to get it to work.

 

Please Please Please publish something useful to support the sale of PRI
cards.

 

Damon

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