[Asterisk-Users] G.729? Worth it? -- YES --

[mmiranda at americatel.com.sv]

im using  g729, but the bw usage is ~26 kbps per call, my gateways (cisco)
support g723 and the bw between the gateways is ~18 kbps per call. Much
better than the ~62 kbps of the g711. if you plan to be a voip provider you
"must" go with compression codecs, especially if you want your customers to
browse the  internet while having a call.
i.e. : We give voip phones (grandstream) to our VIP internet customers (512k
- 1Mb bw), and create a tunnel (QoS) for voip traffic of 128 kbps, with
compression codecs the  customer can have 4 - 5 simultaneous calls, without
compression codecs 2.
BTW, i want to use only g723 but coudnt find licences for it, where can buy
it in groups of 10 - 20 instead of 1000's ?
Miguel 


-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com]On Behalf Of denon
Sent: Wednesday, January 19, 2005 2:13 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] G.729? Worth it?


At 01:49 PM 1/19/2005, you wrote:

>There are systems that use G.711 when traffic is light, but
>switch to compression codecs under heavy traffic to conserve
>bandwidth.  I don't know how/if this can be done in Asterisk.
>
>--Stewart


I don't think there's anything like that built into * as it is now, but it 
would be pretty trivial to write a script to handle such a thing. Effective 
monitoring of the traffic  conditions may require a bit more work .. 
monitoring latencies, and maybe monitoring current utilizations via snmp on 
your core routers/switches/etc. A quick probe to the management interface 
would also give you some insight on current call volume, of course.

-d

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