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Hardware Reference 3
C613-03087-00 Rev E
Contents
Introduction ...................................................................................................... 4
Models Covered By This Reference .................................................................... 4
Where To Find More Information ...................................................................... 4
AR700 Series Routers ........................................................................................ 5
AR725 Router ................................................................................................... 6
Hardware Features ..................................................................................... 6
Power Supply ............................................................................................. 7
AR725 LEDs and what they mean ............................................................. 10
AR745 Router ................................................................................................. 11
Hardware Features ................................................................................... 11
Power Supply ........................................................................................... 13
AR745 LEDs and what they mean ............................................................. 15
AR750S Router ............................................................................................... 17
Hardware Features ................................................................................... 17
Power Supply ........................................................................................... 18
AR750S LEDs and what they mean ........................................................... 19
AR750S-DP Router .......................................................................................... 20
Hardware Features ................................................................................... 20
AT-PWR03 Power Supplies ........................................................................ 21
AR750S-DP LEDs and what they mean ..................................................... 23
AR770S Router ............................................................................................... 24
Hardware Features ................................................................................... 24
Power Supply ........................................................................................... 26
AR770S LEDs and what they mean ........................................................... 27
Online Documentation .................................................................................... 28
To Access Documentation ......................................................................... 28
AT-TFTP Server ................................................................................................. 29
Using Windows Terminal and Hyperterminal ................................................... 30
Router Start-up ............................................................................................... 33
Memory .......................................................................................................... 37
Random Access Memory (RAM) ................................................................ 37
Battery-Backed RAM (AR725, AR745, AR770S only) ................................. 39
Onboard Flash Memory ............................................................................ 39
CompactFlash (AR725, AR745 only) ......................................................... 41
Expansion Options .......................................................................................... 43
AR740 RPS Redundant Power Supply (AT-AR725, AT-AR745 only) ............. 43
SFP Ports (AR770S only) ............................................................................ 46
PICs and NSMs ......................................................................................... 46
PCI Accelerator Cards (PACs) .................................................................... 47
Asynchronous Interfaces ................................................................................. 50
Cables and Loopback Plugs ............................................................................. 51
RS-232 Terminal and Modem Cables ........................................................ 51
Loopback Plugs for Testing Interfaces ....................................................... 56
Test Facility ..................................................................................................... 58
Restricted Maintenance Procedures ................................................................. 60
Diagnostics ............................................................................................... 60
Lithium Battery Replacement .................................................................... 62
Contacting Us ................................................................................................. 62