CHAPTER 3: Installation
15
3.3 Setting the Pinout Switch for Your WAN Interface (T1 Models Only)
The T1 models of the Remote Access Concentrator have a PINOUT switch on their front panels. This switch
allows you to make WAN-interface adjustments based upon country of usage for the Concentrator’s WIDE
AREA 1 port. (For instructions on connecting cables to this port, see
Section 3.6.3
.) For North American
installations, this switch should be set to the
left
(the default setting). For use in Japan, this switch should
be set to the
right
. The switch positions translate to the following WAN-connector pinout settings:
Switch set to the
left
for use in North America:
pin number
1
2
4
5
polarity
+
–
+
–
direction
receive
receive
transmit
transmit
Switch set to the
right
for use in Japan:
pin number
3
4
5
6
polarity
+
+
–
–
direction
transmit
receive
receive
transmit
NOTE
As stated above, the PINOUT switch adjusts the pinout setting for the WIDE AREA 1
port
only
. The default pinout for both ports (WIDE AREA 1 and WIDE AREA 2) is for
North American use. If the LRA3000A or LRA3002A is used in Japan, a ModTap™
adapter is required for the WIDE AREA 2 port to have a correct pinout.
E1 models of the Concentrator don’t have a PINOUT switch; they use this unchangeable, international-
standard WAN-connector pinout:
pin number
1
2
4
5
polarity
+
–
+
–
direction
receive
receive
transmit
transmit
