Business out of P2P-SIP

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Here are some of my thoughts on how to make (or save) money with P2P-SIP. There are two points to note: (1) an end-user doesn't know (or...

Data format and interface for external P2P mode

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Last month, Henning and I submitted an internet-draft on "Data format and interface to an external peer-to-peer network for SIP locatio...

Structured vs unstructured P2P or Why we chose DHT for P2P-SIP?

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One of the questions that people ask me is 'whether structured or unstructured P2P works better for SIP-based Internet telephony?'. ...

New internet-drafts

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Last week, there were some new I-Ds on p2p-sip. draft-matthews-p2psip-nats-and-overlays-00.txt The draft analyzes various issues with NAT in...

Thunderbird as a deployment vehicle

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One of the reasons for success of Skype is that they already had a deployment vehicle in the form of KaZaA file sharing network. I believe t...
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Email based identity in P2P-SIP

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Our p2p-sip architecture (see the previous 'external DHT' post) suggests using email address as user identity for SIP. In particular...
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Using an external DHT as a SIP location service

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In Dec last year, I added support for an external DHT in my SIPpeer application, i.e., the SIP-using-P2P model. A technical report describe...

SIP-using-P2P vs P2P-over-SIP

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I recently saw the video of IETF 64, P2P-SIP Ad hoc meeting . Some of the interesting points from the "SIP based vs DHT based approach...
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2 P2P or Not 2 P2P?

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I read an interesting paper on whether P2P is appropriate for an application or not. Although the paper is based on file sharing work, it s...

First post: initial set of references

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The recent news is that I am back from a long stay in India of about five months. I decided to start a new blog to put together my findings ...