<s>
Ravenna	B-Protocol
is	O
a	O
technology	O
for	O
real-time	B-General_Concept
transport	O
of	O
audio	O
and	O
other	O
media	O
data	O
over	O
IP	B-Protocol
networks	I-Protocol
.	O
</s>
<s>
Ravenna	B-Protocol
was	O
introduced	O
on	O
September	O
10	O
,	O
2010	O
at	O
the	O
International	O
Broadcasting	O
Convention	O
in	O
Amsterdam	O
.	O
</s>
<s>
Ravenna	B-Protocol
can	O
operate	O
on	O
most	O
existing	O
network	O
infrastructures	O
using	O
standard	O
networking	O
technology	O
.	O
</s>
<s>
Ravenna	B-Protocol
is	O
designed	O
to	O
match	O
broadcasters	O
 '	O
requirements	O
for	O
low	O
latency	O
,	O
full	O
signal	O
transparency	O
and	O
high	O
reliability	O
.	O
</s>
<s>
Ravenna	B-Protocol
is	O
an	O
IP-based	O
solution	O
.	O
</s>
<s>
All	O
protocols	O
and	O
mechanisms	O
used	O
within	O
Ravenna	B-Protocol
are	O
based	O
on	O
widely	O
deployed	O
and	O
established	O
standards	O
:	O
</s>
<s>
Streaming	O
is	O
based	O
on	O
the	O
well-established	O
RTP	B-Protocol
/	I-Protocol
RTCP	I-Protocol
protocols	O
with	O
payload	O
formats	O
defined	O
by	O
various	O
RFCs	O
(	O
i.e.	O
</s>
<s>
Both	O
unicast	B-Protocol
and	O
multicast	O
are	O
supported	O
on	O
a	O
per-stream	O
basis	O
.	O
</s>
<s>
Stream	O
management	O
and	O
connection	O
is	O
achieved	O
through	O
SDP	B-Language
or	O
RTSP	B-Protocol
protocol	O
.	O
</s>
<s>
Device	O
configuration	O
and	O
discovery	O
is	O
executed	O
through	O
the	O
use	O
of	O
DHCP	B-Protocol
/	O
DNS	B-Protocol
services	O
or	O
zeroconf	B-Application
mechanisms	O
.	O
</s>
<s>
Low-level	O
device	O
configuration	O
is	O
accomplished	O
through	O
independent	O
web	O
services	O
via	O
http	B-Protocol
protocol	I-Protocol
.	O
</s>
<s>
Time	O
synchronization	O
is	O
maintained	O
via	O
PTPv2	B-Protocol
(	O
IEEE	B-Protocol
1588-2008	I-Protocol
)	O
.	O
</s>
<s>
Ravenna	B-Protocol
is	O
an	O
open-technology	O
standard	O
without	O
a	O
proprietary	O
licensing	O
policy	O
.	O
</s>
<s>
A	O
first-draft	O
version	O
of	O
the	O
Ravenna	B-Protocol
specification	O
is	O
publicly	O
available	O
.	O
</s>
<s>
The	O
development	O
is	O
jointly	O
executed	O
within	O
the	O
RAVENNA	B-Protocol
Partner	O
Group	O
under	O
the	O
leadership	O
of	O
ALC	B-Protocol
NetworX	I-Protocol
GmbH	O
,	O
Munich	O
.	O
</s>
<s>
Current	O
Ravenna	B-Protocol
partners	O
include	O
:	O
</s>
<s>
Ravenna	B-Protocol
contributed	O
to	O
the	O
AES67	O
standardization	O
efforts	O
.	O
</s>
<s>
Ravenna	B-Protocol
is	O
compatible	O
with	O
AES67	O
and	O
all	O
relevant	O
mechanisms	O
,	O
protocols	O
and	O
formats	O
used	O
for	O
synchronization	O
,	O
transport	O
and	O
payload	O
mandated	O
by	O
AES67	O
are	O
fully	O
supported	O
.	O
</s>
<s>
Ravenna	B-Protocol
contributed	O
to	O
the	O
SMPTE	O
2110	O
standardization	O
efforts	O
.	O
</s>
<s>
Ravenna	B-Protocol
is	O
compatible	O
with	O
the	O
audio	O
parts	O
SMPTE	O
ST	O
2110-30	O
and	O
-31	O
.	O
</s>
<s>
Ravenna	B-Protocol
was	O
a	O
recipient	O
of	O
a	O
Technology	O
&	O
Engineering	O
Emmy	O
Award	O
in	O
2020	O
for	O
Development	O
of	O
Synchronized	O
multi-channel	O
uncompressed	O
audio	O
transport	O
over	O
IP	B-Protocol
Network	I-Protocol
.	O
</s>
