<s>
Telepathy	B-Protocol
is	O
a	O
software	B-Architecture
framework	I-Architecture
which	O
can	O
be	O
used	O
to	O
make	O
software	O
for	O
interpersonal	O
communications	O
such	O
as	O
instant	B-Application
messaging	I-Application
,	O
Voice	B-Application
over	I-Application
IP	I-Application
or	O
videoconferencing	B-Application
.	O
</s>
<s>
Telepathy	B-Protocol
enables	O
the	O
creation	O
of	O
communications	O
applications	O
using	O
components	O
via	O
the	O
D-Bus	B-Language
inter-process	B-Operating_System
communication	I-Operating_System
mechanism	O
.	O
</s>
<s>
Through	O
this	O
it	O
aims	O
to	O
simplify	O
development	O
of	O
communications	O
applications	O
and	O
promote	O
code	O
reuse	O
within	O
the	O
free	B-Application
software	I-Application
and	O
open	O
source	O
communities	O
by	O
defining	O
a	O
logical	O
boundary	O
between	O
the	O
applications	O
and	O
underlying	O
network	O
protocols	O
.	O
</s>
<s>
There	O
are	O
free	B-Application
software	I-Application
implementations	O
of	O
various	O
protocols	O
that	O
export	O
Telepathy	B-Protocol
interfaces	O
:	O
</s>
<s>
Haze	O
:	O
for	O
accessing	O
protocols	O
supported	O
by	O
libpurple	O
,	O
the	O
library	O
used	O
by	O
the	O
Pidgin	O
messaging	B-Protocol
client	O
.	O
</s>
<s>
This	O
was	O
done	O
as	O
a	O
Google	B-Application
Summer	I-Application
of	I-Application
Code	I-Application
project	O
in	O
2007	O
.	O
</s>
<s>
Mission	O
Control	O
is	O
the	O
name	O
of	O
the	O
component	O
that	O
provides	O
a	O
way	O
for	O
end-user	O
applications	O
to	O
abstract	O
some	O
details	O
of	O
low	O
level	O
telepathy	B-Protocol
components	O
such	O
as	O
connection	O
managers	O
.	O
</s>
<s>
Tubes	O
are	O
Telepathy	B-Protocol
's	O
mechanism	O
for	O
supporting	O
arbitrary	O
data	O
transfer	O
and	O
remote	O
IPC	O
.	O
</s>
<s>
Telepathy	B-Protocol
forms	O
the	O
basis	O
of	O
the	O
instant	B-Application
messaging	I-Application
and	O
voice/video	O
calling	O
software	O
on	O
the	O
Nokia	O
770	O
,	O
N800	B-Application
,	O
N810	B-Language
,	O
N900	B-Application
,	O
N9	B-Operating_System
and	O
Jolla	B-Operating_System
.	O
</s>
<s>
Protocol	O
implementations	O
provide	O
a	O
D-Bus	B-Language
service	O
called	O
a	O
connection	O
manager	O
.	O
</s>
<s>
Telepathy	B-Protocol
clients	O
use	O
these	O
to	O
create	O
connections	O
to	O
services	O
.	O
</s>
<s>
A	O
channel	O
might	O
be	O
used	O
to	O
send	O
and	O
receive	O
text	O
messages	O
,	O
or	O
represent	O
the	O
contact	O
list	O
,	O
or	O
to	O
establish	O
a	O
VoIP	B-Application
call	I-Application
.	O
</s>
