<s>
The	O
AAL1gator	B-Device
is	O
a	O
semiconductor	O
device	O
that	O
implements	O
the	O
Circuit	B-Architecture
Emulation	I-Architecture
Service	I-Architecture
.	O
</s>
<s>
The	O
name	O
was	O
based	O
on	O
the	O
fact	O
that	O
the	O
AAL1gator	B-Device
implements	O
the	O
ATM	O
AAL-1	B-Protocol
standard	O
.	O
</s>
<s>
The	O
AAL1gator	B-Device
was	O
developed	O
by	O
Network	O
Synthesis	O
,	O
Inc	O
.	O
under	O
contract	O
from	O
Integrated	O
Telecom	O
Technology	O
(	O
IgT	O
)	O
.	O
</s>
<s>
It	O
was	O
the	O
first	O
semiconductor	O
solution	O
to	O
implement	O
the	O
Circuit	B-Architecture
Emulation	I-Architecture
Service	I-Architecture
standard	O
from	O
the	O
ATM	O
Forum	O
.	O
</s>
<s>
It	O
implemented	O
8	O
DS1/E1	O
lines	O
worth	O
of	O
CES	O
and	O
had	O
256	O
channels	O
.	O
</s>
<s>
It	O
flexibly	O
converted	O
the	O
PDH	B-Protocol
DS1	B-Protocol
signal	O
into	O
Asynchronous	O
Transfer	O
Mode	O
cells	O
.	O
</s>
<s>
The	O
AAL1gator	B-Device
was	O
principally	O
designed	O
by	O
the	O
Network	O
Synthesis	O
CEO	O
,	O
Brian	O
Holden	O
and	O
a	O
consultant	O
,	O
Ed	O
Lennox	O
.	O
</s>
<s>
Brian	O
Holden	O
was	O
also	O
involved	O
in	O
the	O
ATM	O
Forum	O
standardization	O
effort	O
for	O
the	O
Circuit	B-Architecture
Emulation	I-Architecture
Service	I-Architecture
.	O
</s>
<s>
Denis	O
Smetana	O
did	O
most	O
of	O
the	O
work	O
on	O
the	O
"	O
D	O
"	O
version	O
and	O
on	O
the	O
later	O
32	O
DS1	B-Protocol
version	O
.	O
</s>
<s>
Two	O
U.S.	O
patents	O
were	O
issued	O
on	O
the	O
AAL1gator	B-Device
's	O
calendar-based	O
transmit	O
scheduler	O
,	O
one	O
on	O
the	O
original	O
product	O
and	O
an	O
even	O
better	O
one	O
on	O
the	O
"	O
D	O
"	O
version	O
enhancements	O
designed	O
by	O
Denis	O
Smetana	O
.	O
</s>
<s>
The	O
AAL1gator	B-Device
also	O
could	O
have	O
gotten	O
another	O
patent	O
on	O
its	O
method	O
of	O
queuing	O
the	O
SRTS	O
samples	O
,	O
but	O
the	O
designers	O
were	O
too	O
busy	O
to	O
get	O
the	O
application	O
in	O
.	O
</s>
<s>
The	O
AAL1gator	B-Device
could	O
flexibly	O
map	O
individual	O
DS0s	O
or	O
groups	O
of	O
DS0s	O
into	O
256	O
ATM	O
VCs	O
.	O
</s>
<s>
The	O
original	O
AAL1gator	B-Device
also	O
was	O
delivered	O
along	O
with	O
the	O
code	O
for	O
an	O
external	O
digital	O
frequency	O
synthesizer	O
.	O
</s>
<s>
The	O
AAL1gator	B-Device
has	O
been	O
used	O
in	O
several	O
applications	O
that	O
were	O
completely	O
different	O
than	O
the	O
application	O
it	O
was	O
designed	O
for	O
.	O
</s>
<s>
Another	O
use	O
was	O
to	O
move	O
DS1	B-Protocol
's	O
around	O
within	O
a	O
box	O
.	O
</s>
<s>
The	O
AAL1gator	B-Device
played	O
a	O
significant	O
role	O
in	O
the	O
following	O
four	O
technology	O
acquisitions	O
:	O
</s>
<s>
The	O
PMC-Sierra	O
acquisition	O
happened	O
after	O
IgT	O
's	O
AAL1gator	B-Device
began	O
to	O
drive	O
the	O
sales	O
of	O
T1/E1	B-Protocol
framers	O
from	O
PMC-Sierra	O
.	O
</s>
<s>
The	O
Onstream	O
and	O
Sentient	O
acquisitions	O
happened	O
after	O
successful	O
Circuit	B-Architecture
Emulation	I-Architecture
Service	I-Architecture
(	O
CES	O
)	O
product	O
developments	O
based	O
on	O
the	O
AAL1gator	B-Device
.	O
</s>
<s>
An	O
anecdote	O
from	O
the	O
AAL1gator	B-Device
's	O
development	O
is	O
that	O
Brian	O
Holden	O
and	O
Ed	O
Lennox	O
made	O
a	O
quick	O
,	O
off-handed	O
decision	O
in	O
a	O
hallway	O
to	O
add	O
the	O
"	O
PMC	O
Mode	O
"	O
to	O
the	O
"	O
B	O
"	O
version	O
of	O
the	O
device	O
in	O
mid-1996	O
to	O
provide	O
a	O
glueless	O
interface	O
to	O
PMC-Sierra	O
'	O
s	O
TQUAD	O
and	O
EQUAD	O
T1	O
and	O
E1	O
framers	O
.	O
</s>
<s>
PMC-Sierra	O
developed	O
a	O
32	O
line	O
version	O
of	O
the	O
AAL1gator	B-Device
known	O
as	O
the	O
AAL1gator32	O
.	O
</s>
