[asterisk-biz] Quality terms..
David Knell
dave at 3c.co.uk
Sun Nov 1 18:43:54 CST 2009
Scott -
I disagree. Poor IP QoS of the sort you describe will lead to lower
ACDs. In addition, things which you can't easily measure by looking at
packets - such as poor audio quality owing to tandem compressions - also
affect ACD, and so ACD is the single most useful call quality measure.
Diagnosis of poor ACD can be helped by measuring the things you
describe, but simply listening to a few call recordings usually makes
the culprit pretty obvious.
--Dave
> Ritesh
>
> ASR and ACD are not the major quality measures. QoS consists of a
> combination of jitter in ms, packet loss%, and delay in ms. Calling
> on a given system may have excellent ACD and ASR, but the calls may
> present conversation that is difficult to understand or annoying (high
> delay), causing users to migrate to another system even when 100% of
> calls connect. This can easily be the case as the route to the SBC or
> switch may be good, while the RTP or voice route may suffer from high
> packet loss, delay and jitter.
>
> Scott
>
> On Sun, Nov 1, 2009 at 7:03 AM, Ritesh A <helloritesh at gmail.com>
> wrote:
> Nitzan,
>
> Thanks so much. Yes, this helps. I am getting 70% ASR and no
> wonder, thats bugging.
>
> Ritesh
>
>
>
>
> On Sun, Nov 1, 2009 at 4:43 PM, Nitzan Kon <nk3569 at yahoo.com>
> wrote:
> ASR: Average Successful rate - in essence what
> percentage of
> calls are going to be answered.
> ACD: Average Call Duration - the average duration of
> all calls.
>
> >From a business perspective - the higher the ASR the
> better
> because this means more calls actually connect. You
> can have
> a great quality route with high ACD - but if the ASR
> is only
> 10% then it's pointless as 90% of calls will just get
> bounced.
>
> The higher the ACD the better because this typically
> indicates
> that the route is good quality (people talk longer).
> Another
> very important aspect to ACD is that high ACD also
> indicates
> less false answers, see below:
>
> FAS: False Answer Supervision - it's a fancy name to
> basically
> having the route operator rip you off and transmit an
> answered
> signal and start billing you as soon as it starts
> ringing, many
> times even if they don't actually deliver your calls
> anywhere.
> In this case ACD will be very low because calls aren't
> actually
> getting through - they're just billing you as-if they
> got through.
>
> That's all I could think of right now..
>
> --
> Nitzan Kon, CEO
> Future Nine Corporation
> http://www.future-nine.com
>
>
> --- On Sun, 11/1/09, Ritesh A <helloritesh at gmail.com>
> wrote:
>
> > From: Ritesh A <helloritesh at gmail.com>
> > Subject: [asterisk-biz] Quality terms..
> > To: "Commercial and Business-Oriented Asterisk
> Discussion" <asterisk-biz at lists.digium.com>
> > Date: Sunday, November 1, 2009, 5:17 AM
>
> > Folks,
> >
> > While choosing a carrier, there are certain
> parameters that
> > should be understood. Does anyone (e.g. a supplier)
> have any
> > data on what those terms are and what they mean?
> > Its a business relevant information and hence the
> posting
> > here. Hoping to get some answers.
> >
> >
> >
> > Thanks a in advance.
> > --
> > Ritesh
> > PS: I am interested in explanation for terms such as
> ASR,
> > ACD etc and what they actually mean? A pointer to
> the
> > webpage explaining the details would suffice as
> well.
> >
> >
> >
> >
> >
> >
>
> > -----Inline Attachment Follows-----
> >
> > _______________________________________________
> > --Bandwidth and Colocation Provided by
> http://www.api-digital.com--
> >
> > asterisk-biz mailing list
> > To UNSUBSCRIBE or update options visit:
> >
> http://lists.digium.com/mailman/listinfo/asterisk-biz
>
> _______________________________________________
> --Bandwidth and Colocation Provided by
> http://www.api-digital.com--
>
> asterisk-biz mailing list
> To UNSUBSCRIBE or update options visit:
>
> http://lists.digium.com/mailman/listinfo/asterisk-biz
>
> _______________________________________________
> --Bandwidth and Colocation Provided by
> http://www.api-digital.com--
>
> asterisk-biz mailing list
> To UNSUBSCRIBE or update options visit:
> http://lists.digium.com/mailman/listinfo/asterisk-biz
>
>
>
> --
> Scott Brown
> +1.831.480.5180
> +1.509.479.4492 fax
> _______________________________________________
> --Bandwidth and Colocation Provided by http://www.api-digital.com--
>
> asterisk-biz mailing list
> To UNSUBSCRIBE or update options visit:
> http://lists.digium.com/mailman/listinfo/asterisk-biz
More information about the asterisk-biz
mailing list