Tf vvc activity area k ip telephony deployments
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TF-VVC Activity Area K: IP Telephony Deployments. Dr. Saverio Niccolini Research Staff Member now @ Network Laboratories, NEC Europe Ltd. ([email protected]). TF-VVC Activity Areas. Activity Area K: IP telephony deployments Work Items:

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TF-VVC Activity Area K: IP Telephony Deployments

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Tf vvc activity area k ip telephony deployments

TF-VVC Activity Area K:IP Telephony Deployments

Dr. Saverio Niccolini

Research Staff Member

now @ Network Laboratories, NEC Europe Ltd. ([email protected])


Tf vvc activity areas

TF-VVC Activity Areas

  • Activity Area K: IP telephony deployments

    • Work Items:

      • Survey about the existing IP telephony deployments

        • leader - Saverio Niccolini, NEC Europe Ltd.

      • Recommendations on how to connect different nodes

        • leader - Saverio Niccolini, NEC Europe Ltd.

      • Setting up SIP.edu services

        • leader - Erik Dobbelsteijn, SURFnet

VoIP WS @ TNC2005 - POZNAN - JUNE 2005


Survey existing ip telephony deployments

Survey: existing IP telephony deployments

  • Survey document is considered to be ready

    • document circulated in the mailing list and no more comments received

  • Questions about

    • details of the deployment

      • web-site

      • domains that are supported

      • compliance with SIP.edu

      • calling preferences (by URI, by number based dial plan)

      • linking of IP Telephony with the PSTN world (inbound/outbound)

      • usage of SRV records, NAPTR record

      • usage of ENUM (trees, prefixes)

      • usage of SW/HW (suggested or users free to choose)

      • dimension of the deployment itself (per protocol)

      • linking withH.323 GDS

      • usage of video in addition to voice

      • usage of FW/NAT traversal methods

      • legal issues implications (lawful interception: call details, wiretap)

      • consideration on security implications (DoS, SPIT, etc.)

      • usage of methods for authentication/authorization

      • usage of white pages or phone books

VoIP WS @ TNC2005 - POZNAN - JUNE 2005


Survey existing ip telephony deployments1

Survey: existing IP telephony deployments

  • Problems:

    • is the Survey really interesting to TF-VVC?

      • if yes, I hope this Survey is already PERFECT because I have received really few comments!

      • if no, let’s drop it and save our time

  • Given that the Survey is interesting

    • I would like to find a way to reach the bigger audience possible

      • not only NRENs

      • also research institutions

      • also R&D related to industry (like the lab where I work)

    • Ideas on how to achieve such an objective (thanks to Egon)

      • Each TF-VVC member should take the responsibility to distribute this in its own constituency (I agree)

      • 4 ways (for each TF-VVC NREN and University representative)

        • send it yourself to the technical leads of deployment sites you know of;

        • send it to local mailing lists you know technical people with IP Telephony deployments are subscribed to;

        • send it to your general contact persons (this is not the preferred solution as many will stay unanswered because they land on the wrong desks);

        • if you are not the IP Telephony person, but are a participant in TF-VVC while your colleague is not, send it to the IP Telephony specialist in your own organization and ask him/her to send it to his/her contact persons.

      • Collect the answers and send them back to me

    • Let’s define some deadline otherwise the Survey will never be completed

      • it is about two months that the Survey is ready and no people doing anything about it (ignoring mail on the mailing list)

VoIP WS @ TNC2005 - POZNAN - JUNE 2005


Recommendations on how to connect different deployments

Recommendations on how to connect different deployments

  • After the deployments are detailed in the Survey

    • What if people want to dial each other?

      • in the H.323 works there is VideNet and the Global Dialing Scheme (unified numbering plan for H.323 zones, including options to connect to PSTN, only in few places)

      • Something similar to H.323 GDS for the SIP world?

        • A SIP GDS (static routing) is the easiest way to start

      • Is ENUM the (only) way to go?

        • if yes, which ENUM hierarchy then (since there are many but not one golden one)?

          • ENUM (layer 9 problem) vs. private ENUM

      • Or is there something else?

        • what about using TRIP?

VoIP WS @ TNC2005 - POZNAN - JUNE 2005


Recommendations on how to connect different deployments1

Recommendations on how to connect different deployments

  • Discussion started (but not finished)

    • Ben Teitelbaum (Internet2)

    • Stephen Kingham (AARNET)

    • Tyler Johnson (VideNet)

    • Erik Dobbelsteijn (SURFNET)

    • Egon Verharen (SURFNET)

  • Latest addition to the discussion

    • Wojciech Nawrot (PNSC)

    • Joao Pereira (FCCN)

    • Saverio Niccolini (NEC)

  • Is difficult to extend the discussion to an open mailing list

    • if you are interested contact me or Egon and we can try to introduce in the discussion updating you on the last results

    • once we have something that looks like reasonable we come to the TF-VVC mailing list and discuss the pros/cons

VoIP WS @ TNC2005 - POZNAN - JUNE 2005


Setting up sip edu services

Setting up SIP.edu services

  • SIP.EDU (http://www.internet2.edu/sip.edu/)

    • we had a presentation from Ben Teitelbaum (Internet2)

    • All recommendations are on the web and easy to implement

      • contact Internet2 if you want to join

  • The idea is to move toward a SIP.e(d)u deployment

    • somehow evolving from SIP.edu

    • still in discussion (Erik Dobbelsteijn (SURFNET)) is the leader for this

    • some step forward already presented by SWITCH (SIP Infoday, January2005, Zurich)

VoIP WS @ TNC2005 - POZNAN - JUNE 2005


That s all

That’s all!

Questions?

VoIP WS @ TNC2005 - POZNAN - JUNE 2005


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