[Juser] How to make synchronous collaborative writing

[Loys Masquelier]

Hello,

is it possible to make synchronous collaborative writing using jabber.
I am looking for that kind of tool which enables several users to share 
and to work on the same textual document. The ideas should be exchanged 
by a telephone conference (voice).

Is it possible with jabber protocol. Which clients ?
Is it possible with another tool ?

Regards.
LM.