<s>
A	O
FRAD	O
(	O
Frame	B-Protocol
Relay	I-Protocol
access	O
device	O
or	O
Frame	B-Protocol
Relay	I-Protocol
assembler/disassembler	I-Protocol
)	O
is	O
a	O
device	O
that	O
turns	O
data	B-Protocol
packets	I-Protocol
into	O
Frame	B-Protocol
Relay	I-Protocol
frames	O
that	O
can	O
be	O
sent	O
over	O
a	O
Frame	B-Protocol
Relay	I-Protocol
network	I-Protocol
and	O
turns	O
the	O
received	O
Frame	B-Protocol
Relay	I-Protocol
frames	O
into	O
data	B-Protocol
packets	I-Protocol
.	O
</s>
<s>
Its	O
assembly	O
and	O
disassembly	O
functionality	O
is	O
similar	O
to	O
a	O
packet	B-Protocol
assembler/disassembler	I-Protocol
(	O
PAD	O
)	O
,	O
which	O
is	O
used	O
for	O
accessing	O
X.25	O
networks	O
.	O
</s>
