SkyPe

Category:Sasecurity
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| Not quite. Sip uses a dyncmic dns server jus to mak the initial 
contact.
| Afterthat it still uses direct connection from clioent to client for 
the
| actual audio data.
Well of course --- the issue I'm identifing is the overhead of an idling skipe node which establishes p2p links with every node it expects to 
communicate with vs sip making the one to the server 
Do these extra connections really count as "Network Unfriendly"? How does it compare with the extra load on a meshbox due to the Asterix 
module? Well how about Skype being network unfriendly --- It makes direct connection to every peer you add to your phonebook, whereas Sip only connects to a server? 
| Personally I'd use skype. I know this sounds trite, but its really 
simple
| for the user, its free and it works (on multiple platforms). It can 
use
| some extra bandwidth if you let it, but I'm happy to pay for my 
"free"
| calls with bandwidth rather than cash....as you can tell from my sig 
:)
| If there is a reason not to trust/use skype, I'd be genuinely 
interested to hear it. 
=== qos ===
No I'm not sure, but I remember reading something like that. If there 
is 
no priority or bandwidth allocation given to voice traffic, I wonder 
how 
a voip conversation will survive when a few other users on the same 
node 
are downloading a CD at the same time and all trafic is FIFO...
> are you sure that the LW mesh code actually provides QoS 
priority
>to VOIP traffic? We've looked closely and, other than disabled hooks 
to
>Frottle, haven't found anything.
 
>>Having played around with a few VOIP systems, Skype.com seems the 
best
>>performing one at this time in my setup. Others I tried were 
Deltathree,
>>mywebcalls and sipphone.com. Except mywebcalls, which performed 
worse,
>>the others are sip based and performed moderate. Unfortunately every 
sip
>>system I tried was outperformed by Skype. Anybody experienced similar
>>results?
>>
>>One question that remains is: Though we have meshboxes prioritizing 
VOIP
>>traffic, what happens if the router to the SDSL line doens't support
>>QoS, like i.e. the SOHO 78 we use in ATM mode. The meshnode that goes 
to
>>the gateway may have priority for VOIP, but the router to the SDSL 
line
>>is stil FIFO.
>>
>>To be able to deploy VOIP successfully I believe that traffic has to 
be
>>prioritized either by bypassing the fifo queue, or by reserving
>>bandwidth for VOIP exclusively.
>>