[Asterisk-Users] Digium Hardware Reliability

[Cory Andrews]

To get an accurate portrayal of defect rate, a very large sample size will
obviously result in a more accurate calculation.  I calculated a defect rate
of between 1-2% for Digium products, based on an arbitrary sample size of
5000 units.  These included "ALL" Digium products, not just TDM products.
This does not account for shipping mishandling, or onsite mishandling
leading to failure.  Excluding those factors, I'd offer an educated
assessment of around 1% DOA/Failure rate.  Waiting on Sangoma data which is
likely about the same.

 

I can't find an "industry standard" defect rate for general electronic
components, but 1% seems pretty low.

 

Cory Andrews

Executive Vice President

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PBXSelect.com

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From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Cory Andrews
Sent: Friday, June 30, 2006 3:17 PM
To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
Subject: RE: [Asterisk-Users] Digium Hardware Reliability

 

I'm working on quantifying an overall defect rate for both Digium and
Sangoma products, based upon overall number of units deployed over a 12
month period versus overall number of units RMA replaced.  I believe both
products to have very low DOA rates, well below acceptable industry
standards for electronic components, but the data will tell the story.  More
to come shortly.

 

Cory Andrews

Executive Vice President

++++++++++++++++++

VoIPSupply.com

PBXSelect.com

++++++++++++++++++

454 Sonwil Drive

Buffalo, NY 14225

voice - 800.398.VoIP X3402

fax - 716.630.1548

e - Cory at VoIPSupply.com

m - 716.907.4059

aim - B2Cory

  _____  

From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Philippe
Lindheimer
Sent: Friday, June 30, 2006 3:04 PM
To: asterisk-users at lists.digium.com
Subject: Re: [Asterisk-Users] Digium Hardware Reliability

 

Andrew,

you seem to be assuming a lot. These were spread out across different parts
of the country (US), on projects I was involved with but deployed by more
than compentent telco and engineering colleagues of mine. And ... in the
majority of the cases, they were DOA (not a transient issue, noisy line or
not). The warranty is there and Digium or their resellers make good - but
the delays in the project and the lossed time are still real. Once working,
they do seem to continue working fine.

So ... don't try to read too much into it. That is why I am very interested
in seeing what others are finding.

p


From: Andrew Kohlsmith <akohlsmith-asterisk at benshaw.com>
To: asterisk-users at lists.digium.com
Date: Fri, 30 Jun 2006 08:49:07 -0400
Subject: Re: [Asterisk-Users] Digium Hardware Reliability

On Friday 30 June 2006 02:24, Philippe Lindheimer wrote:
> I would love to see some feedback on this as well. I've lost exact count
> now, but think I've seen about 5-6 failures on their cards TDM400P and
> TDM2400P cards, mostly FXO but in once case FXS. And I don't deal with
that

Then put proper telco line protection in place! Good lord, it's blindingly 
obvious to me that you seem to be in a particularly harsh environment and 
that the protection on the FXO modules was not designed for the type of 
transient disturbances you're experiencing.

-A.

 

  

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