<s>
H.460	B-Protocol
is	O
a	O
series	O
of	O
extensions	O
to	O
the	O
H.323	B-Protocol
videoconferencing	O
standard	O
from	O
the	O
ITU	O
.	O
</s>
<s>
Introduced	O
in	O
2005	O
,	O
several	O
of	O
the	O
extensions	O
,	O
including	O
H.460.17	O
,	O
H.460.18	O
and	O
H.460.19	O
,	O
deal	O
with	O
firewall	B-Application
and	O
NAT	B-Protocol
traversal	I-Protocol
.	O
</s>
