Specifications
Table Of Contents
- AR Router Hardware Reference
- Copyright
- Contents
- Introduction
- Models Covered By This Reference
- Where To Find More Information
- Using Windows Terminal and Windows Hyperterminal
- Router Start-up
- Online Documentation
- AT-TFTP Server
- Memory
- AR300 Series Routers
- AR400 Series Routers
- AR700 Series Routers
- AT-RPS 740
- Mini Accelerator Cards (MACs)
- PCI Accelerator Cards (PACs)
- Flash Memory
- Interfaces
- Test Facility
- Cables And Loopback Plugs
- PICs and NSMs
- Restricted Procedures
- Contacting Us

Hardware Reference 27
C613-03058-00 REV A
Figure9: 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 PowerSystem
LAN ISDN
ActiveB2 B1Link RxdCollTxd
DB9
MAC CARD SLOT