[asterisk-users] Skype + Asterisk

[Eric Jacksch]

Michael is bang on -- I've minimized VoIP quality issues at several sites by
reserving sufficient outbound bandwidth.  This is especially important if
it's a small office using ADSL.


On 2007-09-16 11:05, "Michael Graves" <mgraves at mstvp.com> wrote:

> On Fri, 14 Sep 2007 18:53:53 +0000, John Meksavan wrote:
> 
>> Alejandro,
>> 
>>  Thanks for replying.  I did come by this website before.  I was just
>> wandering, if anybody actually tried Skype with Asterisk.  My
>> experimentation with the Sip Protocol and Asterisk is at end because I
>> could never get QOS with any sip provider, ie Broadvoice, Vitelity, and
>> Teliax, when connecting directly to the "General Internet".
>> 
>>  In my past experience, Skype has been the only VOIP that works very well.
>> If I could just integrate this with my Asterisk at work, it would really
>> make my boss happy.
> 
> Huh? In my experience QOS is that it's enirely something I have to deal
> with....not the upstream providers. It matters most with respect to how
> I manage outbound bandwidth. Other traffic across my router can cause
> trouble for the voip service if I don't ensure adequate bandwidth.
> 
> You simply can't get assured QOS over the internet. But the problem
> usually isn't the internet, it's the edge. For me QOS tagging has been
> less usefull overall than "traffic shaping"...which is an edge process
> for managing bandwidth at the user-end router.
> 
> Skype is seriously problematic since it will use various ports in an
> unpredicatable fashion. That makes it difficult to manage its traffic
> since you don't know where its acting.
> 
> I've tried two software programs intended to interface Skype to SIP
> (PSGW 3.0 & ?? ) and they both had problems. Most noticably high
> latency since they used the Skype API to take the call back to baseband
> audio then re-encoded it into a SIP call.
> 
> I've found that using traffic shaping and G.792 codecs makes SIP very
> reliable for a small office on a decent DSL connection.
> 
> Michael
> 
> 
> --
> Michael Graves                           mgraves at pixelpower.com
> Sr. Product Specialist                          www.pixelpower.com
> Pixel Power Inc.                                 mgraves at mstvp.com
> 
> o713-861-4005
> c713-201-1262
> skype mjgraves
> fwd 54245
> 
> 
> 
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-- 
Eric Jacksch
http://www.jacksch.com