7705 SAR-A Connectors and LEDs
7705 SAR-A Chassis Installation Guide 121
2T1/E1 Ports
(only for
chassis variant
with T1/E1
ports)
RJ-45
connectors
Two rows of T1/E1 ports provide eight RJ-45 connectors (2x4); the ports
on the top row are numbered 1, 3, 5, 7 and the ports on the bottom row
are numbered 2, 4, 6, 8. There are two LEDs for each R-J-45 connector,
a green LED on the left and an amber LED on the right; together they are
labeled as “Stat”.
Stat LED Green: Indicates that a valid communication link has been established
Amber (blinking): Indicates that a loopback is in progress
Amber (solid): Indicates that there is no link present (administratively up
and operationally down)
Unlit: Indicates that the port is disabled or shut down
3 Status (Power
Status and
Alarm) LED
— The combined power status and alarm LED indicates:
• the combined status of the router’s three main functional blocks
(the control and switching functional block, the T1/E1 ports
functional block (for the variant with T1/E1 ports), and the
Ethernet ports functional block). Blocks that are administratively
shut down are not included in the combined status indicated by
this LED.
• the alarm status
Green (solid): Indicates that valid power is available and that the system
is operationally up, which means that all functional blocks configured to
be administratively up are operationally up
If the chassis is operating without redundant power feeds and the no-
power-feed-monitoring command has been issued on the unused
power feed, the LED is green if no other alarm condition exists.
Green (blinking): Indicates that one or more functional blocks is
initializing
Amber: Indicates that an alarm condition exists
Unlit: Indicates that the DC power supply is not installed, the DC power
feed is not connected, or the DC voltage level is out of range
4 Console Connector The Console port uses an RJ-45 connector and is used for the initial
system startup as well as system configuration and monitoring. The
Console port is a Universal Asynchronous Receiver/Transmitter (UART)
port. Refer to Console Port for pinout assignments.
5 Sync In In The Sync In port has a 1.0/2.3 coaxial connector that can be used to
receive an external synchronization input signal.
Table 28: 7705 SAR-A Connector and LED Descriptions (Continued)
Key Label/Part Sub-
category
Description
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