[Asterisk-Users] Asterisk Codecs [G.729]

[Unavailable ID]

Rich,

In real world, using real tool, getting real number.  You don't expect to
either talk only mode or listen only mode.  Per call must have Rx & Tx for
inbound & outbound.

The numbers look more like 83Kbits/sec (thanks Andrew Gillham) in the wiki
page or the cisco bandwidth consumsion (thanks Alex Volkow).  I'm using
IPTraf to monitor the bandwidth.  When there is no call, it's 1.8 Kbits/sec.
When making a call, it's 166.8 Kbits/sec

ULAW codec:

Total rates:                166.8 kbits/sec
                                 103.6 packets/sec

Incoming rates:           83.6 kbits/sec
                                  52.2 packets/sec

Outgoing rates:            83.2 kbits/sec
                                   51.4 packets/sec

Engineering rate is per channel but to calculate the bandwidth consumsion,
it must be in realtime full-duplex.

----- Original Message ----- 
From: "Rich Adamson" <radamson at routers.com>
To: <asterisk-users at lists.digium.com>
Sent: Wednesday, March 10, 2004 3:41 AM
Subject: Re: [Asterisk-Users] Asterisk Codecs [G.729]


> All of the numbers he's showing are apparently adding inbound and outbound
> traffic together, giving results that are approximately double what is
> actually seen on the wire. If he is working in a half-duplex ethernet
> environment, those numbers have some meaning; if full-duplex, then cut
them
> in half for reasonable engineering values. (Also, some _appear_ to be
> questionable.)
>
>
> > What is the method you are using to test the bandwidth. Can you give us
a outline
> > how to do a bit rate measurement on
> > asterisk.
> >
> <snip>
> >
> >     ulaw 64 Kbps, sample-based Also known as alaw/ulaw 166kbits/sec
> >     alaw 64 Kbps, sample-based Also known as alaw/ulaw 167kbits/sec
> >     gsm 13 Kbps (full rate), 20ms frame size   66kbits/sec
> >     speex 2.15 to 44.2 Kbps     n/a
> >     iLBC 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size
57.6kbits/sec
> >     G.729 8 Kbps, 10ms frame size    license
> >
> >     Have anyone test it with G.729?  Please let me know.
>
>
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