NK8000 Network planning
70
Building Technologies
DMS8000_Application_Specification_&_Planning_MP4.10_A6V10063710_a_en
Fire Safety & Security Products
06.2007
5.4.5
FDDI / CDDI
Transceiver Media
Max. Nodes
per Segment
Topol-
ogy
Max.
Speed
Connector
Type
Max. Distance
without spe-
cial HW
Remarks
URL
FDDI
2-wire
fibre 62,5
m
500 DAS Sta-
tions
Dual ring
100 Mbps
MIC
2 km from
station to sta-
tion
100km the
whole ring
5.4.6
xDSL
Transceiver Media
Max. Nodes
per Segment
Topol-
ogy
Max.
Speed
Connector
Type
Max. Distance
without spe-
cial HW
Remarks
URL
ADSL
2-wire
copper
Point-to-point
Point-to-
point
Down-
stream
1.544 to 6.1
Mbps
Upstream
16 to 640
kbps
5.4 km @ 1.544
Mbps
1.2 km @ 6.1
Mbps
www.blackbox.com
www.anixter.com
www.zyxel.com
CDSL
2-wire
telephone
lines
Point-to-point
Point-to-
point
Down-
stream 1
Mbps
Upstream
128 kbps
5.4 km
Proprietary
technology
from Rock-
well and
Nortel
HDSL
4-wire
twisted
pair
6-wire
twisted
pair
Point-to-point
Point-to-
point
1.544 Mbps
on two
twisted pair
lines
2.48 Mbps
on three
twisted pair
lines
3.6 km
T1/E1 service
between
server and
phone com-
pany or within
a company
IDSL
2-wire
telephone
lines
Point-to-point
Point-to-
point
128 kbps
5.4 km
Similar to the
ISDN BRI
service but
data only (no
voice on the
same line)
RADSL
2-wire
telephone
line
Point-to-point
Point-to-
point
Down-
stream
1.544 to 6.1
Mbps
Upstream
16 to 640
kbps
Depending on
the transfer rate
up to 18 km
Not standard-
ised
SDSL
2-wire
twisted
pair
Point-to-point
Point-to-
point
1.544 Mbps
(USA and
Canada)
2.048 Mbps
(Europe)
3.6 km
Same as
HDSL but
requiring only
one line of
twisted pair
VDSL
Existing
2-wire
telephone
lines
Point-to-point
Point-to-
point
Down-
stream 12.9
to 52 Mbps
Upstream
1.5 to 2.3
Mbps
1.3 km @ 12.9
Mbps
900 m @ 25
Mbps
300 m @ 52
Mbps
VDSL is
currently a
draft version