<s>
IP-DECT	B-Protocol
is	O
a	O
technology	O
used	O
for	O
on-site	O
wireless	O
communications	O
.	O
</s>
<s>
It	O
uses	O
the	O
DECT	B-Protocol
air	O
interface	O
for	O
reliable	O
wireless	O
voice	O
and	O
data	O
communication	O
between	O
handsets	O
and	O
base	O
stations	O
and	O
the	O
well	O
established	O
VoIP	B-Application
technology	O
for	O
the	O
corded	O
voice	O
communication	O
between	O
base	O
stations	O
and	O
server	O
functions	O
.	O
</s>
<s>
The	O
advantage	O
is	O
the	O
circuit	O
switched	O
approach	O
and	O
therefore	O
better	O
specified	O
quality	O
of	O
service	O
for	O
vocal	O
communication	O
than	O
with	O
Wireless	B-Architecture
LAN	I-Architecture
.	O
</s>
<s>
A	O
DECT	B-Protocol
phone	O
must	O
remain	O
in	O
proximity	O
to	O
its	O
own	O
base	O
(	O
or	O
repeaters	O
thereof	O
)	O
,	O
and	O
WLAN	B-Architecture
devices	O
have	O
a	O
better	O
range	O
given	O
sufficient	O
access	O
points	O
,	O
however	O
voice	B-Protocol
over	I-Protocol
WLAN	I-Protocol
handsets	O
impose	O
significant	O
design	O
and	O
maintenance	O
complexity	O
for	O
large	O
networks	O
to	O
ensure	O
roaming	O
facilities	O
and	O
high	O
quality-of-service	O
.	O
</s>
<s>
There	O
are	O
some	O
of	O
the	O
traditional	O
telephone	O
equipment	O
manufacturers	O
and	O
smaller	O
enterprises	O
that	O
offer	O
IP-DECT	B-Protocol
systems	O
,	O
both	O
for	O
residential	O
(	O
single-cell	O
base	O
station/access	O
points	O
)	O
,	O
as	O
well	O
as	O
for	O
enterprise	O
usage	O
(	O
multi-cell	O
with	O
multiple	O
base	O
stations/access	O
points	O
,	O
and/or	O
seamless	O
handoff	O
between	O
cells	O
)	O
where	O
it	O
is	O
important	O
to	O
cover	O
large	O
areas	O
with	O
a	O
maintained	O
speech	O
path	O
.	O
</s>
<s>
For	O
enterprise	O
use	O
the	O
following	O
vendors	O
produce	O
IP-DECT	B-Protocol
systems	O
:	O
</s>
