Qlink-3000 Multiplexing modem
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Copyright © 2003 -2005 Cronyx Engineering
5
Section 1. Introduction
1.1. Application
Qlink-3000
–
is a modem family for physical links, designed to operate over a single twisted
pair. Models equipped with two data ports (/2E1 and /E1-ETV) include the multiplexing
device and allow transmission of two independent data streams over a single twisted pair.
Device structural diagram is presented on the figure:
Port 0
E1 (G.703, G.704)
Port 1
E1 (G.703, G.704)
or
Ethernet 10/100BaseT
(Ethernet 10BaseT)
Multi-
plexer
SHDSL
transceiver
SNMP port
Console port
Processor
Maximum data transmission rate is 2304 kbit/s (36 x 64 kbit/s). Maximum transmission
distance depends on the data transmission rate in the link. The maximum link length for
the 26 AWG (0.4 mm) cable is given in the following table:
k
n
i
l
e
h
t
n
i
e
t
a
r
a
t
a
d
l
a
c
i
s
y
h
P
e
t
a
r
n
o
i
s
s
i
m
s
n
a
r
t
a
t
a
D
h
t
g
n
e
l
e
l
b
a
c
m
u
m
i
x
a
M
s
/
t
i
b
k
0
2
3
2
s
/
t
i
b
k
4
0
3
2
m
k
0
.
4
s
/
t
i
b
k
4
8
7
s
/
t
i
b
k
8
6
7
m
k
4
.
5
s
/
t
i
b
k
2
7
2
s
/
t
i
b
k
6
5
2
m
k
6
.
7
The picture shows the diagrams of the item's use:
P
o
rt
1
(
E
th
e
rn
e
t)
Port 0 (E1)
E
th
e
rn
e
t
(S
N
M
P
)
P
o
rt
1
(
E
th
e
rn
e
t)
Port 0 (E1)
Qlink-3000
Ethernet Hub/Switch
Qlink-3000
Telephone
exchange
Router
Physical line
("copper pair")
Telephone
exchange
Ethernet
network
