20
Standard telephone wire of any gauge or type-flat, twisted or quad is used to connect the modem to the telephone network.
A telephone cable typically consists of three pairs of wires, one of which is used for transmission. The connector at the end
of the telephone cable is called RJ-45 connector and it consists of eight pins. VDSL signal use pins 4 and 5 for data and
power transmission. A telephone cable is shown below.
(Figure 9)
Figure 9:
Telephone cable
A
B
The A and B connectors on the rear of the modem are RJ-45 connectors. These connectors are wired identically. The
RJ-45 connectors have eight positions, two of which are wired. The modem uses the center two pins. The pin out
assignment for these connectors is presented below.
(Table 5)
Table 5:
RJ-11 Pin out Assignments
Pin #
MNEMONIC
FUNCTION
1
NC
Unused
2
NC
Unused
3
NC
Unused
4
Line +
VDSL
5
Line -
VDSL signal -
6
NC
Unused
7
NC
Unused
8
NC
Unused
Dynamix VC-MP/SP USER’S MANUAL Ver. A.2
