Hardware Reference
27
C613-03031-01 REV E
All jumpers should be left in the factory default positions unless you are
advised otherwise by your authorised Allied Telesyn distributor or reseller.
Jumpers should only be replaced by authorised service personnel. Unauthorised
opening of the router lid may cause danger of injury from electric shock, damage
to the router, and invalidation of the product warranty.
Figure 9: Location of main components on the AT-AR300L(S), AT-AR300(S), and
AT-AR310(S) base CPU cards.
Table 11: Functions of the jumpers on the AT-AR300L(S), AT-AR300(S), and
AT-AR310(S) base CPU cards.
Jumper
Function
Factory Default
J1
BRI Tx termination.
Not installed (no termination).
J2
BRI Rx termination
Not installed (no termination).
300CPU
LED
LED
LED
LED
LED
LED
LED
LED
LED
LED
BRI 0
RJ45
ETHERNET 0
RJ45
VOICE 0
RJ11
VOICE 1
RJ11
MDX
PC
HUB
ASYNCHRONOUS
PORT 0
CONFIG
S/N
ISDN TX
TERMINATION
J1
J2
ISDN RX TERMINATION
REV
M2
M1
BOOT EPROM
WARNING:
LITHIUM BATTERY
DO NOT DISPOSE IN FIRE
Run Power
System
LAN
ISDN
Active
B2
B1
Link
Rxd
Coll
Txd
DB9
MAC CARD SLOT
