Agreed 100% ! That means we are all closer on taking 'mail-agents' to the holy-grail level of voice communications ! I wonder if SIP 4.1 UAS will also handle MX records ? That would be awesome ! I can't wait until we see something like mod_audio_spammer in FreeSWITCH, so those lovely marketing workers can give voice to their so much acclaimed phallic products.
Regards, Raul On Wed, 2009-04-01 at 13:58 -0400, Peter J. Zandvoort wrote: > Excellent stuff Anthony! J > > > > SIP over SMTP could actually be useful in a push-to-talk type of > scenario. Put the voice packets in an attachment. A slight delay, > perhaps, but nicely encapsulated in a totally standard protocol. > > > > > > From:[email protected] > [mailto:[email protected]] On Behalf Of > Nik Middleton > Sent: Wednesday, April 01, 2009 12:08 PM > To: [email protected] > Subject: Re: [Freeswitch-users] Another FreeSWITCH First! > > > > > Well you almost had me there, but SIP over SMTP? That was too much. > > > > Regards, > > > > > ______________________________________________________________________ > From:[email protected] > [mailto:[email protected]] On Behalf Of > Anthony Minessale > Sent: 01 April 2009 16:31 > To: Freeswitch-users > Subject: [Freeswitch-users] Another FreeSWITCH First! > > > > > The FreeSWITCH team is excited to announce that FreeSWITCH is the > first telephony application to support the new SIP 4.1 protocol > specification. > > Unlike its predecessors, SIP 4.1 has been created with the > collaboration of both the jabber foundation and the IETF. With this > match made in heaven, one can now encapsulate an xml representation of > a sip message, which in turn can encapsulate a standard SIP 2.0 > message making it possible to do more than ever before. > Other exciting features include: > > *) RFC 4109 support: (SIP over SMTP), allowing packets to traverse NAT > with ease. > > *) Full circle presence: endpoints must subscribe to each character in > the printable ASCII range that may be used to indicate presence and > the server will send an xml notification to the client for each > character that is enabled whenever a call takes place which in turn > can be used to build a SIP 4.1 FYI packet that can be sent to all the > neighboring SIP devices so they may send themselves a NOTIFY telling > them that the light should blink if the same packet happens to be sent > from a neighbor. Then when the neighbor wants to send a presence > packet it establishes a dialog with the Third Party Presence Agent > TPPA and leaves the message there. Then it sends the server a > PRESENCE packet, which is then, relayed to the subscribers with the > TPPA id so all the subscribers can connect to the TPPA server to make > the little light blink. > > *) Retirement of SDP: SDP is deprecated in favor of a list of URL’s > describing the desired codec. The UA can then request this URL and > get the full details of the media requirements. The media port is > negotiated through trial and error where the calling UA asks the > called UA if the port it has guessed randomly is correct via direct > TCP connection and an exchange of XML PORT MARKUP LANGUGE XPML > > INVITE [email protected] SIP 4.1 > Content-type: sip-xml-encapsulated > <SIP version=”4.1”> > <content type=”SIP-INVITE”> > <INVITE recipient=”[email protected]”> > <data type=”sip-2/0”/> > <![CDATA[INVITE [email protected] SIP 2.0 > To: [email protected] > From: [email protected] > Subject: SIP Rocks > ]]> > </data> > </INVITE> > </content> > </SIP> > > > > -- > Anthony Minessale II > > FreeSWITCH http://www.freeswitch.org/ > ClueCon http://www.cluecon.com/ > > AIM: anthm > MSN:[email protected] > GTALK/JABBER/PAYPAL:[email protected] > IRC: irc.freenode.net #freeswitch > > FreeSWITCH Developer Conference > sip:[email protected] > iax:[email protected]/888 > googletalk:[email protected] > pstn:213-799-1400 > > > _______________________________________________ > Freeswitch-users mailing list > [email protected] > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users > http://www.freeswitch.org _______________________________________________ Freeswitch-users mailing list [email protected] http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
