Allied Telesis AR Series Hardware Reference Manual page 32

32
Figure 14: Location of main components on the AT-AR390 and AT-AR395 base CPU
cards.
RJ45
J2 J3
120Ω
G.703/PRI
75Ω ISDN 0
J4 TX
J5 RX
GND CAP
J1
(TE/NT MODE)
MAC CARD SLOT
BOOT EPROM
Table 14: Functions of the jumpers on the AT-AR390, and AT-AR395 base CPU
cards.
Jumper Function
J1 Selects NT mode (installed) or TE mode
(not installed).
J2 PRI Tx Termination (120Ω or 75Ω)
J3 PRI Rx Termination (120Ω or 75Ω)
J4 Coax Tx grounding: CAP (grounded via
100nF capacitor) or GND (grounded).
J5 Coax Rx grounding: CAP (grounded via
100nF capacitor) or GND (grounded)
Analogue Voice Ports
The AT-AR300(S) and AT-AR310(S) have two and four analogue voice ports,
respectively. The analogue voice ports provide full PABX functionality,
including the ability to transfer calls from one port to another. Each analogue
voice port can be individually configured to meet specific requirements,
including fully programmable ringing tones.
RJ45
120Ω
PC HUB
ASYNCHRONOUS
MDX
PORTS 0 & 1
ETHERNET 0
LAN WAN
Link Txd Coll Rxd Syn ISDN
AR Router
DB9
CONFIG
WARNING:
LITHIUM BATTERY
DO NOT DISPOSE IN FIRE
System Run Power
Active
390CPU
Factory Default
Not installed (TE mode)
75Ω
75Ω
GND
CAP
C613-03031-01 REV E