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Re: Google Talk federating for IM and voice calls via XMPP and SIP


Chronological Thread 
  • From: Ben Teitelbaum <>
  • To: i2im <>
  • Cc: wg-pic <>
  • Subject: Re: Google Talk federating for IM and voice calls via XMPP and SIP
  • Date: Thu, 19 Jan 2006 16:37:22 -0500

Five months after Neal sent the last message to this list, Google
Talk's open XMPP federation is live [1]!

Who from the I2MM group is still running a Jabber server? What has
been the experience interop'ing with Google Talk thus far?

-- ben

1. http://googleblog.blogspot.com/2006/01/open-federation-for-google-talk.html

Neal McBurnett
<>
writes:

> Google has stepped into the IM and voice call markets, using
> XMPP/jabber, with SIP support on the way. They're working on a
> federation with policies to allow open interoperability but curtail
> spam and protect privacy. It will be interesting to follow this.
>
> Neal McBurnett http://bcn.boulder.co.us/~neal/
> Signed and/or sealed mail encouraged. GPG/PGP Keyid: 2C9EBA60
>
> http://www.google.com/talk/about.html
>
> http://www.google.com/talk/developer.html
> excerpts:
>
> "Google Talk uses the standard XMPP protocol for authentication,
> presence, and messaging"
> TLS is required The only supported authentication mechanism is SASL PLAIN
> We plan to support SIP in a future release
>
> Google Talk currently does not encrypt chats or calls. But we are
> working hard to make many improvements to Google Talk while it is in
> beta, and we plan to fully support encryption of chats and calls
> before our official release.
>
> What protocols are used for voice calls?
> Google Talk supports a custom XMPP-based signaling protocol and
> peer-to-peer communication mechanism. We will fully document this
> protocol. In the near future, we plan to support SIP signaling.
>
> Today, Google Talk supports the following standard voice codecs:
> PCMA, PCMU, G.723, iLBC. We are also evaluating the Speex codec. We
> also support codecs from Global IP Sound: ISAC, IPCMWB, EG711U, EG711A
>
> We are working closely with Earthlink and Sipphone to federate
> EarthLink's Vling service and Sipphone's Gizmo Project with the
> Google Talk service as quickly as possible
>
> it is important to balance openness with ensuring that we
> maintain a safe and reliable service that protects user privacy and
> blocks spam and other abuses. We are using the federation opportunity
> with EarthLink and Sipphone to develop a set of guidelines by which
> all members of the federated network can work together to ensure that
> we protect our users while maximizing the reach of the network. We
> are also eager to hear from other people in the industry about how
> best to build a federation model that is open, scalable, and ensures
> best-in-class user experiences. If you have thoughts on federation or
> suggestions for how we can better enable open communications, please
> share them with us at the Google Talk Interoperability Google Group.
>
> http://groups.google.com/group/google-talk-open
>
>

--
Ben Teitelbaum http://people.internet2.edu/~ben/



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