Re: [Ekiga-list] Re (2): Peer to peer VoIP.

[Jo-Erlend Schinstad <joerlend schinstad gmail com>]

1990/1/1  <peasthope shaw ca>:
> At Wed, 25 Mar 2009 17:25:32 +0200, Ian wrote
> "Actually, SIP is peer-to-peer protocol. If you know that a person you
> want to call is running Ekiga (or any other SIP client) on a machine
> that has a particular IP, you can make a call to sip:<IP address> ...
>
> Now what's the advantage of calling sip:user example com ..."
>
> Well, if the server is down, a peer to peer call would be
> better than none.  If the server is running but overloaded
> a peer to peer call might help to understand the problem.
> A recent discussion concerned this possibility.
>
> Regards,             ... Peter E.


Presence information: you don't want to connect to everyone you
_could_ call just to see if they're available. A single connection
to a server can handle that for you.

Addressing: it's easier to remember joe example com than it is
to remember joes IP and port. Especially considering the fact that
both IP and port may be dynamically configured on joes network,
and further that joe may move between the networks.

SIP: Session Initiation Protocol. It's meant to _initiate_ the session.
Most other protocols used for VoIP work the same way, because
it's the right way.

Jo-Erlend Schinstad