Re: [lopsa-tech] Build Your Own Skype

2010-09-29 Thread Jesse Thompson

On 09/28/2010 11:04 PM, Brad Knowles wrote:

Facetime on the iPhone is the most trivially simple piece of software to 
configure -- Apple has already done all the hard work for you.


You are probably right, but an Apple-only solution won't cut it in the 
real world.  I wish you were right about your claims of FaceTime being a 
completely open protocol.  I am skeptical.


According to this article, it appears that FaceTime is entirely 
dependent on Apple's proprietary push service (which appears to be a 
proprietary implementation of XMPP,) instead of the XMPP-JINGLE open 
standard, for invoking the SIP session.


http://www.packetstan.com/2010/07/special-look-face-time-part-1.html


Based on this analysis we can determine several critical pieces of
how Facetime works:

* Unknown TCP protocol starts the conversation, likely
  initiated following an event that starts on the GSM network;
* Unknown UDP traffic between two hosts with similar IP
  addresses;
* Certificate validation through an Akamai server, followed by
  an HTTPS request to an Apple server;
* STUN traffic for NAT traversal;
* SIP traffic for call setup and negotiation;
* UDP stream data for video/audio.


FaceTime may indeed be more open than Skype.  But if it cannot exist 
without Apple, it is not actually open.


Jesse



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Re: [lopsa-tech] Build Your Own Skype

2010-09-29 Thread Brad Knowles
On Sep 29, 2010, at 9:28 AM, Jesse Thompson wrote:

 You are probably right, but an Apple-only solution won't cut it in the real 
 world.  I wish you were right about your claims of FaceTime being a 
 completely open protocol.  I am skeptical.

All I can tell you is that Apple has said that they are committed to making 
Facetime a true open standard.  Whether or not they actually deliver on this 
promise is something that only time will tell.


Certainly, what we know about Facetime so far is that it is largely built on 
existing open standards, and even if Apple didn't deliver on their promise, I 
would hope that it wouldn't be too hard to create a real open standard that 
delivers the same functionality.  At that point, Apple would be forced to 
choose whether to continue with their proprietary implementation or support the 
open standard.

Since part of the purpose of Facetime (and Apple's claim to be committed to 
turning it into a true open standard) is that it would give them a really 
strong weapon to use in their fight against the Microsoft/Google/Skype 
Hegemony, I think Apple's choice in this matter is pretty clear.

But the only thing we can be certain of is that time will tell.

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Re: [lopsa-tech] Build Your Own Skype

2010-09-29 Thread Brandon S Allbery KF8NH
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

On 9/29/10 00:04 , Brad Knowles wrote:
 My experience with Skype for audio chat is that it's actually not that good

For what it's worth, I listen to a lot of podcasts where one or more parties
are Skyped in... and they're constantly having problems with audio quality,
dropouts, dropped connections (and occasional inability to reconnect), etc.
 Doesn't inspire much in the way of confidence.

- -- 
brandon s. allbery [linux,solaris,freebsd,perl]  allb...@kf8nh.com
system administrator  [openafs,heimdal,too many hats]  allb...@ece.cmu.edu
electrical and computer engineering, carnegie mellon university  KF8NH
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Re: [lopsa-tech] Build Your Own Skype

2010-09-29 Thread Jesse Thompson

On 09/29/2010 11:43 AM, Brad Knowles wrote:

Since part of the purpose of Facetime (and Apple's claim to be committed to 
turning it into a true open standard) is that it would give them a really 
strong weapon to use in their fight against the Microsoft/Google/Skype 
Hegemony, I think Apple's choice in this matter is pretty clear.


I wouldn't say that there is a single hegemony.  Each company is trying 
to make their own hegemony.  Apple included (as underscored by their 
choice to abandon JINGLE in favor of system that puts Apple in complete 
control.)


Except for Google, who's dominance plan appears to involve offering a 
superior user experience instead of controlling the competition.


I'm wary of Google, but they actually have delivered a solution that 
works.  I can make a voice call to the gmail web client from Pidgin on 
my Linux computer while logged in to my local XMPP service.  And, I can 
make calls to other users on any federated XMPP service.  I can do that 
today.


Jesse



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Re: [lopsa-tech] Build Your Own Skype

2010-09-29 Thread Yves Dorfsman
On 10-09-29 12:09 PM, Jesse Thompson wrote:
 On 09/29/2010 11:43 AM, Brad Knowles wrote:
 Since part of the purpose of Facetime (and Apple's claim to be
 committed to turning it into a true open standard) is that it would
 give them a really strong weapon to use in their fight against the
 Microsoft/Google/Skype Hegemony, I think Apple's choice in this matter
 is pretty clear.

 I wouldn't say that there is a single hegemony. Each company is trying
 to make their own hegemony. Apple included (as underscored by their
 choice to abandon JINGLE in favor of system that puts Apple in complete
 control.)

 Except for Google, who's dominance plan appears to involve offering a
 superior user experience instead of controlling the competition.

 I'm wary of Google, but they actually have delivered a solution that
 works. I can make a voice call to the gmail web client from Pidgin on my
 Linux computer while logged in to my local XMPP service. And, I can make
 calls to other users on any federated XMPP service. I can do that today.


I agree with you about google, they did it right in the sense that they 
created a client which offers better quality than most, but stuck to standard 
protocols AND accept federation (I still don't understand why facebook refuses 
to federate, while using completely standard protocols).

On the other hand, as much as I am not a fan of Apple, they have open up a lot 
of their technologies, look at CUPS and calendarserver. Maybe they moved away 
from jingle for a technical reason...


-- 
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 http://images.SollerS.ca/
   xmpp:y...@zioup.com
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Re: [lopsa-tech] Build Your Own Skype

2010-09-28 Thread Jesse Thompson

On 09/24/2010 07:14 PM, Edward Ned Harvey wrote:

From: tech-boun...@lopsa.org [mailto:tech-boun...@lopsa.org] On Behalf
Of Jesse Thompson

traffic.  The actual voice/video capabilities depend on the client or
device.  e.g. Psi and Pidgin now have rudamentary p2p voice
capabilities.  No client compares to Skype that I'm aware of.


Oh dear.  You haven't used iChat.  It's enormously better than skype as a
client.  Only problem is the fact that it's Mac only.


and that's a big problem.  If the majority of your users can't run it, 
then it can immediately be ruled out.




If you are an Apple shop, then iChat is an option.  It can use XMPP for
presence management and IM, and Bonjour/RendezVous/zeroconf to set up
the voice/video connection.  I don't know of any other clients that
work
with iChat.


Oh.  I guess you have used iChat.  ;-)


I'm speaking from my ass.  I haven't actually used it for video or voice 
chat.  I'm basing its potential viability on what others have told me. 
I don't see much of a point in evaluating it since, even on a college 
campus, the OSX requirement is impossible to overcome.


Jesse



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Re: [lopsa-tech] Build Your Own Skype

2010-09-28 Thread Jesse Thompson

On 09/25/2010 01:49 AM, Brad Knowles wrote:

On Sep 24, 2010, at 7:19 PM, Edward Ned Harvey wrote:


I really wish iChat were available in Windows/Linux.  But that's not the
apple way.


Facetime is the new standard, and I think it's actually pretty close to where 
these things will be.  You will see Facetime integration into iChat, and I'm 
sure that there will be other implementations as well.


Is there any indication that there will be non-Apple Facetime clients? 
If not, then I think that Facetime will remain a niche application like 
iChat.


Jesse



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Re: [lopsa-tech] Build Your Own Skype

2010-09-28 Thread Chris Hoogendyk


On 9/28/10 9:08 AM, Jesse Thompson wrote:
 On 09/24/2010 07:14 PM, Edward Ned Harvey wrote:
 From: tech-boun...@lopsa.org [mailto:tech-boun...@lopsa.org] On Behalf
 Of Jesse Thompson

 traffic.  The actual voice/video capabilities depend on the client or
 device.  e.g. Psi and Pidgin now have rudamentary p2p voice
 capabilities.  No client compares to Skype that I'm aware of.

 Oh dear.  You haven't used iChat.  It's enormously better than skype as a
 client.  Only problem is the fact that it's Mac only.

 and that's a big problem.  If the majority of your users can't run it, then 
 it can immediately be 
 ruled out. 

[I know I'm jumping in late and there has been plenty of discussion already. I 
have just one 
point/distinction.]

On the other hand, a client is only a client. Any individual should be able to 
use whatever client 
works best for them on their platform as long as it interacts with others. I 
routinely use iChat to 
interact with a hardcore opensource guy who insists on using Jabber with 
whatever the opensource 
thing is that he uses as a client. The only problem I have is that his client 
drops connections 
somewhat frequently.

I also connect over AOL with iChat to people who are on PC's, smart phones 
(that are not iPhones), 
etc. My son uses skype and can connect with me when I'm using iChat. I can also 
text a dumb phone 
by supplying the fully qualified phone number and going through AOL.

So, the question is really about choosing a means of interacting that is 
supported by a sufficient 
spectrum of clients. Or for an individual to choose a client that is 
sufficiently broad to connect 
with whatever means of interacting you settle on. So far, iChat has done 
everything I've wanted to 
do and then some. My daughter has had smores parties (heated over a candle on 
her desk) and pajama 
movie parties with a friend who lives 2000 miles away, connecting from iChat 
with an iSight to 
whatever the friend was using on her PC. They could giggle together and talk 
while watching the same 
movie.

Assuming that everyone has to use the same client comes a bit too close to the 
financial web sites 
that insist you have to be using IE and then program stuff directly to IE so 
that indeed I have to. 
But I can't. Microsoft has not supported IE on Mac for many years and has never 
supported it for Mac 
OS X. So, I'm stuck using the kiosk at my Bank if/when I absolutely have to. 
But that's not at all 
what internet banking is supposed to be. It sucks.


-- 
---

Chris Hoogendyk

-
O__   Systems Administrator
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Re: [lopsa-tech] Build Your Own Skype

2010-09-28 Thread Shrdlu
On 9/28/2010 7:42 AM, Chris Hoogendyk wrote:

 Assuming that everyone has to use the same client comes a bit too
 close to the financial web sites that insist you have to be using IE
 and then program stuff directly to IE so that indeed I have to. But I
 can't. Microsoft has not supported IE on Mac for many years and has
 never supported it for Mac OS X. So, I'm stuck using the kiosk at my
 Bank if/when I absolutely have to. But that's not at all what
 internet banking is supposed to be. It sucks.

It's early, I haven't had enough coffee yet, and normally I'd keep 
quiet, but... I would suggest that you need to switch banks. For a while 
I had three of them that I was accessing for one reason or another, and 
Firefox worked just fine with them all. I have had a banking 
relationship with a bank that seemed to want only IE, and I walked over 
that issue alone (a few years ago). There's simply ALWAYS another bank.

-- 
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is exactly the difference between a mermaid and a seal.
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Re: [lopsa-tech] Build Your Own Skype

2010-09-28 Thread Jesse Thompson

On 09/28/2010 09:42 AM, Chris Hoogendyk wrote:

On 9/28/10 9:08 AM, Jesse Thompson wrote:

On 09/24/2010 07:14 PM, Edward Ned Harvey wrote:

From: tech-boun...@lopsa.org [mailto:tech-boun...@lopsa.org] On Behalf
Of Jesse Thompson

traffic. The actual voice/video capabilities depend on the client or
device. e.g. Psi and Pidgin now have rudamentary p2p voice
capabilities. No client compares to Skype that I'm aware of.


Oh dear. You haven't used iChat. It's enormously better than skype as a
client. Only problem is the fact that it's Mac only.


and that's a big problem. If the majority of your users can't run it,
then it can immediately be ruled out.


[I know I'm jumping in late and there has been plenty of discussion
already. I have just one point/distinction.]

On the other hand, a client is only a client. Any individual should be
able to use whatever client works best for them on their platform as
long as it interacts with others. I routinely use iChat to interact with
a hardcore opensource guy who insists on using Jabber with whatever the
opensource thing is that he uses as a client. The only problem I have is
that his client drops connections somewhat frequently.


Right, but we were talking about voice/video chat.



Assuming that everyone has to use the same client comes a bit too close
to the financial web sites that insist you have to be using IE and then
program stuff directly to IE so that indeed I have to. But I can't.
Microsoft has not supported IE on Mac for many years and has never
supported it for Mac OS X. So, I'm stuck using the kiosk at my Bank
if/when I absolutely have to. But that's not at all what internet
banking is supposed to be. It sucks.


At least you have the option of installing a Windows VM on your Mac.

Jesse



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Re: [lopsa-tech] Build Your Own Skype

2010-09-28 Thread Jesse Thompson

On 09/28/2010 10:36 AM, Chris Hoogendyk wrote:

On 9/28/10 10:51 AM, Jesse Thompson wrote:

Right, but we were talking about voice/video chat.


Right. Which was referred to in the other examples in my message, which
included connections between skype and iChat as well as voice/video
between whatever someone was running on their PC and iChat. The overall
point was the flexibility of iChat to interact with different servers
and clients.


Are you saying that iChat works with Skype voice/video?  Or are you 
saying that iChat supports multiple IM protocols like Pidgin and the 
other multi-protocol clients?




At least you have the option of installing a Windows VM on your Mac.


Bad option. Then I have the added cost of paying $$ to Microsoft for the
use of their OS and for future updates when I really don't want anything
to do with it. An ordinary mompop household would have to pay a
consultant to do the install and configuration as well. No point in
getting into platform wars here. It is sufficient to say that I do not
personally want anything to do with Microsoft. Your choices may vary,
and that is alright.


I didn't say it was a *good* option, but at least you have it. 
Conversely, you can't install an OSX VM on a Windows or Linux desktop 
(unless you are willing to shell out $$$ to Apple for the hardware,) so 
you can't use that as a workaround for using iChat as your Skype 
alternative.


Jesse



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Re: [lopsa-tech] Build Your Own Skype

2010-09-28 Thread Brad Knowles
On Sep 28, 2010, at 9:48 PM, Yves Dorfsman wrote:

 -my understanding is that skype is three things:
   -a very good client
   -a very good proprietary protocol (as in, better than the standard one)

I'm not convinced of that.  In fact, I would submit that a good enough 
standard protocol is far better than a better proprietary protocol.

Maybe if the better proprietary protocol is literally more than one order of 
magnitude better, then maybe it would be time to create a new standard 
protocol that does many of the same things.

   -they pool network connections to get more bandwidth

Again, I'm not convinced that this is a good thing.  At least, for many 
clients/sites I think that this would definitely be a bad thing.

 I don't know of any standard protocol which steals^H^H^H^H^H^H use your 
 neighbour's bandwidth to improve your connection, so unless facetime does 
 something tricky like this, or also use a proprietary protocol (in addition 
 to 
 the standard ones) that's even better than skype's, I wonder how they can be 
 that much better.

Again, I think I disagree with your definition of better.

--
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Re: [lopsa-tech] Build Your Own Skype

2010-09-28 Thread Yves Dorfsman

 Again, I think I disagree with your definition of better.


I used better as in better quality, answering to the argument that facetime 
was more shiny shiny than skype.

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Re: [lopsa-tech] Build Your Own Skype

2010-09-28 Thread Brad Knowles
On Sep 28, 2010, at 9:48 PM, Yves Dorfsman wrote:

 background: I have never used skype nor facetime.

Whereas I use Skype on a daily basis for text chat (including one-on-one and 
group multi-chat), and I've used it for both audio chat (group) and video chat 
(one-on-one).  I've also used Skype on portable devices, like the iPhone.

 If I read this right, chances are that factime is just a very good client 
 to 
 standard protocols (and yes some libraries will do a better job at 
 encoding/decoding H264), which would mean that:

My experience with Skype for audio chat is that it's actually not that good -- 
lots of drop-outs, people getting dropped entirely from the chat, etc  And 
everything depends completely on who initiates the chat -- you're probably okay 
if they're on a high-speed DSL or cablemodem line (10mbps down and 1mbps up), 
but you're screwed otherwise.

And it seriously, seriously sucks for one-on-one video chat.  I have found that 
iChat does much better video and audio quality, even when talking to an AIM 
client on the other end.

In contrast, Facetime totally and completely blows away everything else I've 
ever seen in this space, at least with respect to the kinds of systems that 
individual people can afford.  If you want to build a media cave with hundreds 
of thousands (or millions) of dollars worth of Cisco or Tandberg equipment, you 
can certainly do better than Facetime -- at least, with regards to the quality 
of the video and audio signals, etc

But even the most expensive equipment you can buy cannot possibly hold a candle 
compared to Facetime with regards to how trivially easy it is to actually make 
that connection and start using the service.


Now, instead of comparing Facetime on an iPhone to Skype on a desktop computer, 
let's compare them both to the same hardware platform.  On any handheld device 
I've ever seen, Skype seriously, majorly sucks huge planetoid size boulders, 
just with trying to keep up with group text-mode chat.  Any irc client from the 
past ten-plus years would do (and does) far, far better.  The problem is that 
few people on desktop computers these days know anything about something like 
irc, or are able to install and configure the software so that it works for 
them.

In contrast, Facetime on the iPhone is the most trivially simple piece of 
software to configure -- Apple has already done all the hard work for you.

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Re: [lopsa-tech] Build Your Own Skype

2010-09-25 Thread Edward Ned Harvey
 From: Brad Knowles [mailto:b...@shub-internet.org]

 Facetime is the new standard, and I think it's actually pretty close to
 where these things will be.  You will see Facetime integration into
 iChat, and I'm sure that there will be other implementations as well.

Am I wrong in believing facetime is apple-only?

If it's apple-only, you can only call it the new standard like google wave
was the new standard to replace email.  It bombed because they weren't
friendly with non-google email accounts.  In order to use wave, you could
only sign in using your gmail account, and you could only communicate with
other gmail users.  Wanna talk to someone who isn't on gmail?  Too bad.

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Re: [lopsa-tech] Build Your Own Skype

2010-09-25 Thread Josh Smift
ENH == Edward Ned Harvey lop...@nedharvey.com

ENH Date: Sat, 25 Sep 2010 08:53:32 -0400

ENH Am I wrong in believing facetime is apple-only?

http://en.wikipedia.org/wiki/FaceTime says

  FaceTime is a video calling software feature for iPhone 4 and the fourth
  generation iPod Touch, developed by Apple and announced at WWDC 2010. It
  is based on numerous open industry standards and Apple has pledged to
  release it as an open standard allowing other companies to develop around it.

so it sounds like it is for now, but maybe not forever.

  -Josh (iril...@infersys.com)
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Re: [lopsa-tech] Build Your Own Skype

2010-09-24 Thread Yves Dorfsman

Skype is proprietary and have innovated a lot, I believe nobody else pools 
bandwidth the way they do.

Is this for a company? How big?

My experience is:

For presence and IM, XMPP is one of the best open open protocol today. It does 
voice and video, but, I don't believe there are any physical dedicated devices 
for it, so it'd be pc to pc only. You mention openfire, I have been very 
impressed with openfire, but I have only used it in small setup so I don't 
know how it scales. You can also federate with other servers if that is a 
requirement, so you could do IM with people on gmail etc...

There is a huge market for SIP physical devices, and even professional 
servers, and professionals doing the planing and installs, and if installed 
properly, you should be able to interact between physical devices and PCs. 
Presence works, but I have never seen IM working properly with SIP (could be 
an implementation issue). As Doug mentioned, do talk to people who do that for 
a living, it will save you a lot of time and a few grey hairs.

There are other proprietary, non-standard platform, such as Microsoft (don't 
know the name of the products), but then you run in all the usual issues such 
as you can only use their clients, their directories etc... and they typically 
do not interact with physical devices.

Depending on your budget and requirement, you should also look at the tenors 
such as Tanberg, with enough money, they will install a video conference room 
which make it hard to believe you are not looking at people accross the room.

-- 
Yves.  http://www.SollerS.ca/
 http://images.SollerS.ca/
   xmpp:y...@zioup.com
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Re: [lopsa-tech] Build Your Own Skype

2010-09-24 Thread Edward Ned Harvey
 From: tech-boun...@lopsa.org [mailto:tech-boun...@lopsa.org] On Behalf
 Of Doug Hughes
 
 I'm pretty sure there are any number of commercial voip systems
 available for not too much money that hit all of your bullet points

Name some?

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Re: [lopsa-tech] Build Your Own Skype

2010-09-24 Thread Edward Ned Harvey
 From: Tom Limoncelli [mailto:t...@whatexit.org]
 
 Wouldn't it be easier to write a program that syncs contact lists?

Skype contact lists?  Or something else?
I'm not sure there's an API to the skype contact list...

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Re: [lopsa-tech] Build Your Own Skype

2010-09-24 Thread Jesse Thompson

On 09/24/2010 08:24 AM, Yves Dorfsman wrote:

For presence and IM, XMPP is one of the best open open protocol today. It does
voice and video, but, I don't believe there are any physical dedicated devices


XMPP (Jingle) is used as a control channel, not for exchanging the media 
traffic.  The actual voice/video capabilities depend on the client or 
device.  e.g. Psi and Pidgin now have rudamentary p2p voice 
capabilities.  No client compares to Skype that I'm aware of.




for it, so it'd be pc to pc only. You mention openfire, I have been very
impressed with openfire, but I have only used it in small setup so I don't


I'd be wary of openfire.  VC pressures have forced them to slow 
development of the free version.


http://www.nytimes.com/2009/04/08/technology/start-ups/08sequoia.html?_r=1

Beyond their friendly management GUI, I found the server lacking when I 
evaluated it a couple years ago.  It might be good for small shops however.




know how it scales. You can also federate with other servers if that is a
requirement, so you could do IM with people on gmail etc...


ejabberd, prosody, m-link are other servers worth looking into, which 
will probably outperform openfire in terms of scalability and 
customizability.




There is a huge market for SIP physical devices, and even professional
servers, and professionals doing the planing and installs, and if installed
properly, you should be able to interact between physical devices and PCs.
Presence works, but I have never seen IM working properly with SIP (could be
an implementation issue). As Doug mentioned, do talk to people who do that for
a living, it will save you a lot of time and a few grey hairs.

There are other proprietary, non-standard platform, such as Microsoft (don't
know the name of the products), but then you run in all the usual issues such
as you can only use their clients, their directories etc... and they typically
do not interact with physical devices.


If you are an Apple shop, then iChat is an option.  It can use XMPP for 
presence management and IM, and Bonjour/RendezVous/zeroconf to set up 
the voice/video connection.  I don't know of any other clients that work 
with iChat.


Jesse



Depending on your budget and requirement, you should also look at the tenors
such as Tanberg, with enough money, they will install a video conference room
which make it hard to believe you are not looking at people accross the room.





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Re: [lopsa-tech] Build Your Own Skype

2010-09-24 Thread Edward Ned Harvey
 From: tech-boun...@lopsa.org [mailto:tech-boun...@lopsa.org] On Behalf
 Of Jesse Thompson
 
 traffic.  The actual voice/video capabilities depend on the client or
 device.  e.g. Psi and Pidgin now have rudamentary p2p voice
 capabilities.  No client compares to Skype that I'm aware of.

Oh dear.  You haven't used iChat.  It's enormously better than skype as a
client.  Only problem is the fact that it's Mac only.  

Polycom makes a similar client which is Windows only.

I'm evaluating counterpath Brio now, which is cross-platform, and looks
promising.  But I don't know yet.


 I'd be wary of openfire.  VC pressures have forced them to slow
 development of the free version.

I noticed.  And I'd be willing to consider a commercial offering, but I
don't see that they offer one.


 ejabberd, prosody, m-link are other servers worth looking into, which
 will probably outperform openfire in terms of scalability and
 customizability.

Thanks.


 If you are an Apple shop, then iChat is an option.  It can use XMPP for
 presence management and IM, and Bonjour/RendezVous/zeroconf to set up
 the voice/video connection.  I don't know of any other clients that
 work
 with iChat.

Oh.  I guess you have used iChat.  ;-)

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Re: [lopsa-tech] Build Your Own Skype

2010-09-24 Thread Edward Ned Harvey
 Polycom makes a similar client which is Windows only.
 
 I'm evaluating counterpath Brio now, which is cross-platform, and looks
 promising.  But I don't know yet.

Oh.  I forgot to mention.  Cisco makes a cross-platform client that's really
decent too.  CUPC.  I have no idea how to implement it, or how much it costs
though.

I really wish iChat were available in Windows/Linux.  But that's not the
apple way.

Some people like MS communicator, but not me.  I forget why.  It was a year
ago.  ;-)

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