2005/04/04
��[P2P][VoIP]College of William and Mary�ˤ��P2P SIP�Υɥ�ե�
�����˼��夲�褦�Ȥ�����ΤΡ����θ夹�ä���˺��Ƥ��ޤäƤ������󥿡��ͥåȥɥ�ե�"A P2P Approach to SIP Registration"(draft-bryan-sipping-p2p-00)�ν괶��noritsuna����Υ������Ǹ�������Ƥ��ޤ�����
P2P-SIP�ʤʤ�Ȥʤ��¸���
http://www.noritsuna.com/archives/2005/03/p2psip.html
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- P2P SIP�ϥ����ץ��SIP�ץ��ȥ���˴�Ť�
��Skype�ϥץ��ץ饤������ʥץ��ȥ��� - P2P SIP�ϴ�¸��SIPü�������ѤǤ���
��Skype�����Ѥ���ˤ��ȼ�ü����ɬ�� - P2P SIP��������極���Ф�����
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�ޤ�1���ܤΥ��åȤˤĤ��Ƥϡ������ץ�ʥץ��ȥ���Ǥ�����̤�SIP�Ǥʤ��Ƥ⤤���櫓�ǡ����줳��JXTA�Τ褦�ʥ����ץ��P2P�ץ��ȥ���Ǥ��ɤ������Ǥ���
����2���ܤΥ��åȤϡ�������ǰ���Ǽ���Ǥ������Ǥ��������������Skype�Τ褦���ȼ��ץ��ȥ���Ǥ⡢�ԥ���SIPü���ȤΥ����ȥ�������ǽ����������Ʊ�����Ȥˤʤ�ΤǤϤʤ��Ǥ��礦���ʤ��ʤߤˡ��֡��ȥ��ȥ�å������P2P SIP�Ǥ��ȼ��ץ��ȥ���Ǥ�Ʊ���ˡ����˾åµï¿½ï¿½P2P SIP�˴ؤ���ɥ�եȤǤ⡢��Adopter Node�פȤ�����P2P SIP�ò¥µ¥Ý¡ï¿½ï¿½È¤ï¿½ï¿½Ê¤ï¿½SIPü������³���뤿��Υ����ȥ�������ǽ����ĥԥ����Ѱդ��Ƥ��ޤ���
�Ǹ��3���ܤΥ��åȤϳΤ��ˤ����̤���Ȼפ��ޤ����ɡ������Ф��Ѱդ��ʤ��ȡ��������ƥ�������ˤ�����������Ƴ�ĥ������ʬ�����äƤ��ޤ��������ޤ����㡧����������μ�֤ʤɡˡ������оݤ��¤���VoIP�ץ��ȥ���ʤ���ͤϤ��ޤ�Ȥ�ƻ���ʤ��Ȼפ��ΤǤ������ɤ�ʤ�Τʤ�Ǥ��礦���ġġ�
2005/04/11
��[P2P][VoIP]P2P SIP���Ф���J. Rosenberg��Υ�����
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IETF�ˤϡ�SIP�γ�ĥ�ˤĤ��Ƶ�������SIPPING��Session Initiation Proposal Investigation�ˤȤ�������󥰥��롼�פ�����ޤ��������Υ᡼��󥰥ꥹ�Ȥǡ���ǯ��1��������2��ˤ�����
[Sipping] SIP P2P draft
http://www1.ietf.org/mail-archive/web/sipping/current/msg07401.html
To: sipping <sipping at ietf.org> Subject: [Sipping] SIP P2P draft From: Cullen Jennings <fluffy at cisco.com> Date: Thu, 20 Jan 2005 21:51:22 -1000 David Bryan and I have submitted an draft of some early ideas on P2P with SIP. Until it shows up in the repository, you can find it at http://p2psip.org/ Cullen
�Ȥ����᡼��*1��ȯü�ˤ���P2P SIP���׵�˴ؤ�����������ä��ΤǤ��������ε����˻פ��ä����������Ӥ�������J. Rosenberg��Υ����Ȥ�����Ǥ������οͤϸ�dynamicsoft�Ǻ���Cisco�˵��*2�ΤǤ�����SIP�䤽��˴�Ϣ����NAT�ۤ��ط���RFC��Internet Draft���¿����ɮ���Ƥ���ѥ�ե�ʤ�������Ǥ���
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Re: [Sipping] SIP P2P draft
http://www1.ietf.org/mail-archive/web/sipping/current/msg07440.html
To: Robert Sparks <rjsparks at nostrum.com> Subject: Re: [Sipping] SIP P2P draft From: Jonathan Rosenberg <jdrosen at cisco.com> Date: Thu, 27 Jan 2005 19:00:13 -0500 I also appreciate this work, and think it is worth continuing discussion on documentation on the subject. ��⤳�λŻ���⤯ɾ�����뤷�����Υơ��ޤ˴ؤ���ʸ��ˤĤ��Ƶ�����³����� �ϲ��ͤ��뤳�Ȥ��ȹͤ��롣 Robert lists potential requirements below. However, I don't see them as requirements per se; mostly they seemed like questions around how a particular problem is addressed when building a p2p network. Robert������Ū���׵�ò²¼¤Î¥á¡¼ï¿½ï¿½ï¿½ï¿½ï¿½ó¤·¤Æ¤ï¿½ï¿½ë¡£ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½Ë¤Ï¤ï¿½ï¿½ï¿½é¤¬ï¿½Ü¼ï¿½ Ū���׵�ˤϸ����ʤ��������ΤۤȤ�ɤϡ�P2Pï¿½Í¥Ã¥È¥ï¡¼ï¿½ï¿½ï¿½ï¿½ï¿½Û¤ï¿½ï¿½ï¿½Ý¤ï¿½ï¿½ï¿½Í ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½É¤Î¤è¤¦ï¿½Ë²ï¿½è¤¹ï¿½ë¤«ï¿½ï¿½ï¿½Ë¤Ä¤ï¿½ï¿½Æ¤Î¼ï¿½ï¿½ï¿½Î¤è¤¦ï¿½Ë¸ï¿½ï¿½ï¿½ï¿½ë¡£ The real requirements question is whether our aim is to build p2p just for sip, or to build a generic p2p protocol (i.e., an implementation of chord and bootstrapping techniques) that provide a generic p2p service. In particular, one might imagine a protocol that effectively exposes an API on participating hosts which, given a resource name, a hashing mechanism, and a p2p system ID (i.e., which p2p network), it returns the IP address of the place where that resource can be found. Such a generic protocol would support joins, leaves, and so on. From my brief reading on p2p literature it seems like this decomposition is common. �׵�˴ؤ��������������ϡ��桹����Ū��SIP���������P2P���ۤ��뤳�Ȥʤ� ��������Ȥ����Ū��P2P�ץ��ȥ���ʤ��ʤ����Chord�μ����ȡ��֡��ȥ��ȥ�� �פΥƥ��˥å��ˤ��ۤ��뤳�ȤʤΤ����Ǥ��롣�äˡ���Ԥʤ黲�åۥ��Ȥظ� ��Ū��API���������ץ��ȥ���������Ǥ��롣�����Ǹ���API�Ȥ��äˡ��꥽���� ̾���ϥå���Υᥫ�˥��ऽ����P2P�����ƥ�ID�ʤ��ʤ��P2P�ͥåȥ���ˤ�Ϳ ������ȡ����Υ꥽������¸�ߤ������IP���ɥ쥹���֤��褦�ʤ�ΤǤ��롣 ���Τ褦�����ѥץ��ȥ���ϻ��ä�Υæ�ʤɤò¥µ¥Ý¡ï¿½ï¿½È¤ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ä¤¬P2P�˴� ����ʸ�����ñ���ɤ���¤ꡢ����ʬ�Ϥϰ���Ū�Ǥ���褦�˻פ��롣 In essence, is the goal to build a generic, standardized p2p toolkit ontop of which we can build lots of p2p applications, or is it just to make sip p2p and do it in a sip specific way? �ܼ��ˤ����ơ�¿����P2P���ץꥱ������������Ȥ������ѤǤ�������Ū��ɸ�� �����줿P2P�ġ��ë¥ï¿½Ã¥È¤ï¿½ï¿½ë¤³ï¿½È¤ï¿½ï¿½ï¿½Åªï¿½Ê¤Î¤ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½È¤ï¿½SIP P2P���äƤ��� ��SIP��Í����ˡ�����Ѥ��뤳�Ȥ���Ū�ʤΤ��� I will note that, even once you have developed such a toolkit, serious questions remain about how it could be used by SIP for the purposes of building a p2p network. The primary issue is security, of course. SIP specifies its behaviors logically speaking; a proxy is just a role, and it runs on a host at a specific IP address. Same with registrars, presence servers, etc. If you envision that the p2p protocol effectively provides an alternative to DNS - a way to find my proxy, or find my presence server - then we could make SIP p2p by just replacing rfc3263 with that mechanism. ���Τ褦�ʥġ��ë¥ï¿½Ã¥È¤ï¿½ï¿½Ã¶ï¿½ï¿½È¯ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½Ð¡ï¿½ï¿½ï¿½P2P�ͥåȥ�����ۤ��� ����ˤ����SIP�Ǥɤ����Ѥ��뤫�פȤ������������������Ĥ롢�Ȥ������Ȥ� ���դ��뤳�ȡ���������������ϥ������ƥ�����SIP�Ϥ��ο����ñ¤¤¤ï¿½ï¿½ï¿½ï¿½Î¤ï¿½ ���Ƥ��롣�ץ�������ñ�ʤ뵡ǽ�ǡ������IP���ɥ쥹����ĥۥ��Ⱦ��ư��롣 �쥸���ȥ�䡢�ץ쥼�󥹥����Фʤɤ�Ʊ�ͤǤ��롣P2P�ץ��ȥ��뤬�ʥץ����� ��ץ쥼�󥹥����Фò¸«¤Ä¤ï¿½ï¿½ë¤¿ï¿½ï¿½ï¿½ï¿½ï¿½Ë¡ï¿½Ç¤ï¿½ï¿½ï¿½ï¿½DNS�����ؤ����Ū���󶡤��� �Ȥ���С��桹��RFC3263�ò¤½¤Î¥á¥«ï¿½Ë¥ï¿½ï¿½ï¿½ï¿½ï¿½Ö¤ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½SIP P2P���뤳�� ���Ǥ���������� But it wouldn't work, of course. The reason is entirely security. SIP assumes a trust relationship that has proxies and presence servers as privileged systems - ones that users implicitly trust. p2p breaks that. Thus, the challenge is entirely how to adapt sip to trust models whereby the provider is an untrusted element by the user. Such an "extension" to address doing that might even be useful in systems where the server is still centrally located via DNS - for example a sip proxy run by a coffee shop I happen to step into. Why should I trust them? ������������Ϥ������ư��ʤ������������������ƥ������ƥ�����SIP���� �������ƥ�Ȥ��ƤΥץ�������ץ쥼�󥹥����Ф����Ŀ���ط�������ˤ��Ƥ��롣 �����ơ��桼���Ϥ����Υ����Ф�̵���˿��ꤷ�Ƥ��뤬��P2P�Ϥ���������� �����Ƥ��ޤ������äơ�����Ϥ�äѤ顢�桼���ˤ�뿮��Ǥ��ʤ����Ǥ��󶡼� �Ȥʤ뿮���ǥ���Ф��ƤɤΤ褦��SIP��Ŭ�Ѥ��뤫�Ȥ������Ȥˤʤ롣���Τ� ���ʡֳ�ĥ�פϡ������Ф��ޤ�����Ū�ˡ�DNS�ˤ�äơ����֤���Ƥ��륷���ƥ� �����㤨�С��䤬���ޤ���Ω����ä������ҡ�����åפ�ư���SIP�ץ������� ���Ǥ����Ȥ��뤫�⤷��ʤ������Ρ���Ϥ������ꤹ�٤��ʤΤ��� A fair question to ask is whether certain features we want (like dialing 911 or protecting presence data from prying eyes) can ever reasonably be accomplished in the differing trust models provided by p2p systems. �Ҥͤ�٤���äȤ�ʼ���Ȥϡ��桹����������ε�ǽ�ʶ۵����󡢤ޤ��ϥץ� ���󥹥ǡ�����Τ����������뤳�ȡˤ�P2P�����ƥ�ˤ�ä��󶡤�����Τ� �ϰۤʤ뿮���ǥ�ξ�Ǥ��������뤲���ʤ��Τ����Ȥ������ȤǤ��롣 One of the big technical issues is NAT traversal. I think that is actually not so hard. We have all of the tools already - ICE in particular is a p2p traversal technique. ICE relies on STUN and TURN. Currently, it assumes that the STUN and TURN servers are centralized. But, they need not be. Instead, we could have them as peer components, and we use the p2p network to locate those too. There, finding them is interesting. The requirement is that you can be a TURN or STUN server if you are on the public Internet. Thus, its not really a search for a single resource by name, but rather a search for any resource with a particular property. Not sure how that could be done in chord, worth considering some more. �ç¤ï¿½Êµï¿½ï¿½Ñ²ï¿½ï¿½ï¿½ï¿½1�Ĥ�NAT�ۤ��Ǥ��롣��ϡ�����ϼºݤΤȤ�������ۤ��ñ¤·¤ï¿½ �ʤ��ȹͤ��롣�桹�ϴ������ƤΥġ������äƤ��롽���ä�ICE��P2P��NAT�ۤ� ���ѤǤ��롣ICE��STUN��TURN�˰�¸���롣���ߤΤȤ�����STUN��TURN�Ͻ��沽�� �줿�����Ф�����Ȥ��Ƥ��뤬��ɬ�����⤽��ɬ�פϤʤ�������ˤ�����ԥ� �Υ���ݡ��ͥ�ȤȤ����������桹�Ϥ����ò¸«¤Ä¤ï¿½ï¿½ë¤¿ï¿½ï¿½ï¿½P2P�ͥåȥ���� ���Ѥ��뤳�Ȥ�Ǥ��롣�Ĥޤ��׵�ϡ�̾���ˤ�ä�ñ��Υ꥽������õ������ �ǤϤʤ����ष�������������STUN��TURN�����ФȤ��Ƥε�ǽ�ˤ���ĥ꥽������ õ�����Ȥˤʤ롣���줬Chord�ˤ�äƤɤΤ褦�˼¸��Ǥ��뤫���꤫�Ǥʤ����� �⤦�����ͤ�����ͤ����롣 �ʸ�ά��
[ʸ��ǿ���Ƥ���Robert��Υ᡼���Re: [Sipping] SIP P2P draft�򻲾�]
�����ơ���Ĺ���ΤǾ�ά���ޤ������ɡ�Rosenberg��ϺǸ�ˡ��������Х�IP���ɥ쥹������ʤ��ԥ���Chord�˻��ä��뤿��ˤϡ�TURN�����Ф��饰�����Х�IP���ɥ쥹�ȥݡ��Ȥ��Ȥ�������ơ�Chord�μ��̻ҤȤ����Ѥ��뤳�Ȥ��Ǥ���������ġĤȽҤ٤Ƥ��ޤ���
�פ���ˡ�P2P SIP�ʤ�Ƹ��äƤʤ��ǡ��ꥢ�륿���ॳ�ߥ�˥�������������P2P�ץ��ȥ���/�ġ��ë¥ï¿½Ã¥È¤ï¿½ï¿½ï¿½Ð¤ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½Í¤ï¿½ï¿½ï¿½ï¿½è¡£ï¿½Þ¤ï¿½ï¿½ï¿½ï¿½É¤Ã¤ï¿½ï¿½Ë¤ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½Æ¥ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½É¡×¤È¤ï¿½ï¿½ï¿½ï¿½Ã¤Ç¡ï¿½ï¿½Í¤â¤³ï¿½ï¿½ï¿½Æ±ï¿½Õ¤ï¿½ï¿½ï¿½ï¿½Ç¤ï¿½ï¿½ï¿½ï¿½É¡ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½Ç¡ï¿½SIP���Ƭ�ˤ���ФȤꤢ�������ܤ����ޤ��ʺ���P2P�ե졼������̵�������ˡפȤ������¤�Τ��ˤ���櫓�ǡġġ�
��[P2P][VoIP]P2P SIP���Ȥ߹��ߥ��եȥ�����NimX
Nimcat Networks Inc.
http://www.nimcatnetworks.com/
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Nimcat Networks Inc. - PRESS RELEASES
http://www.nimcatnetworks.com/Reading.aspx?fid=46&ftype=1
TORONTO (March 14, 2005) - Aastra Technologies Limited (TSX: AAH), a leader in enterprise communication access products, extended its industry leadership today with the launch of VentureIP(TM) the first enterprise-class, P2P (peer-to-peer) IP-based phone system. Powered by Nimcat Networks�� nimX software, the system enables small to-medium business (SMBs) to install, operate and manage a full-featured phone system by simply plugging the VentureIP 480i telephone into their local area network (LAN). The system scales on a phone by phone basis and can be connected to the local PSTN via the VentureIP Gateway.
�澮��ȸ�����P2P SIP�ˤ��IP���ä�¸����������PSTN�ˤ�IP����ȥ�å������������ä�¸����륵���ӥ����󶡤��Ƥ��ޤ��ʻ��͡�PEER TELEPHONY EXCHANGE (PTX)�ˡ��ɤ��ޤ�SIP��ɸ��Ū�˻ȤäƤ���Τ��ޤ��褯�狼��ʤ��Ǥ����������μҰ����񤤤Ƥ���Internet Draft�����ä��ΤǤ��Τ����ɤ�Ǥߤޤ���
Industrial-Strength P2P SIP
http://www.ietf.org/internet-drafts/draft-matthews-sipping-p2p-industrial-strength-00.txt
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NimX�ˤĤ��Ƥϡ��ܺ٤�ʬ���꼡��ޤ������Ǽ��夲�ޤ���
*1 ��󥯤�http://www.p2psip.org/�δְ㤤���Ȼפ����ɡġġ�
*2 �����������ƥॺ��VoIP���եȳ�ȯ�ġ���٥�������(CNET Japan)
2005/04/18
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