[Asterisk-Users] Codec throughput was GrandStream 1.0.4.55 Firmware

[Chris Stenton]

To add to that I produced a little table from the data in wiki as well as a
couple of calculations of my own for the std codecs.

View in a fixed font. The IP rates are in kbs.

Codec   Rat  Packet  Theoretica  Theoretica IAX 2      IAX2 trunk
        e    Interv  l IP  Rate  l IP Rate  trunk 1    2 calls
        kbs  al      1 call      2 calls    call       measured
                                          measured
G729    8     30ms    18.7        26.7       30         39
G723.1  5.3   30ms    16          21.3
G723.1  6.4   30ms    17          23.5
GSM     13.2  20ms    29.2        42.4       35         50
iLBC    13.3  30ms    24.0        37.3       28         49
iLBC    15.2  20ms    31.2        46.4
LPC10   2.5   22.5ms  16.7        19.2       22         28
G711    64    30ms    74.7        138.7      82         148

One thing to not with iLBC is that if * has to do the conversion it takes a
lot of CPU power and might be the reason for the measured results.

Chris

----- Original Message ----- 
From: "James H. Thompson" <jht at lj.net>
To: <asterisk-users at lists.digium.com>
Sent: Friday, April 30, 2004 6:37 AM
Subject: Re: [Asterisk-Users] Re: GrandStream 1.0.4.55 Firmware


> This wiki page has the results of measuring actual bandwidth usage of
different codecs on an IAX
> link:
>
>     http://www.voip-info.org/wiki-Asterisk+bandwidth+iax2
>
>
> Jim
>
> James H. Thompson
> jht at lava.net
>
> ----- Original Message ----- 
> From: "Duane" <digium at aus-biz.com>
> To: <asterisk-users at lists.digium.com>
> Sent: Thursday, April 29, 2004 5:05 PM
> Subject: Re: [Asterisk-Users] Re: GrandStream 1.0.4.55 Firmware
>
>
> > Ryan Thrash wrote:
> > > Actually, .65 is being tested now! lol
> > >
> > > iLBC and echo improvements... echo still not fixed 100%, though.
Sounds
> > > like that's post .65...
> >
> > How much bandwidth does iLBC consume on average per second?
> >
> > -- 
> > Best regards,
> >   Duane
> >
> > http://www.cacert.org - Free Security Certificates
> > http://www.nodedb.com - Think globally, network locally
> > http://www.sydneywireless.com - Telecommunications Freedom
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> > http://e164.org - Using Enum.164 to interconnect asterisk servers
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