Cisco UBR7246VXR Посібник з монтажу - Сторінка 10
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LEDs
Figure 1-2
Table 1-1
Table 1-1
Clock Card End
1
Pin
1
3
9
11
1. Any pins not described in this table are not connected.
Note
LEDs
The clock card features "ACTIVE" and Loss of Service ("LOS") status indicators for both the primary
and secondary clock source connectors. In addition, the clock card features single "ENABLE,"
"HOLDOVER," "FREERUN," and "FAULT" LEDs. (These LEDs are shown in
Figure 1-3
Table 1-2
Cisco Cable Clock Card Hardware Installation Guide for the Cisco uBR7246VXR Universal Broadband Router
1-4
DB-15 T1 Clock Card Interface
Pin 3
PRI
ENABLE
Pin 11
lists connector pinouts for the DB-15 T1 clock card interface.
DB-15 T1 Clock Card Interface
Signal
Transmit Tip
Receive Tip
Transmit Ring
Receive Ring
Cisco provides DSU/CSU cables. You can use a DA-15 female to pigtail cable, 24.6 feet (7.5
m), CAB-SDS6 cable, COM-T1Product Number. For pinouts, refer to:
http://www.cisco.com/univercd/cc/td/doc/product/core/cis7505/ipicg/
LEDs on the Clock Card—Faceplate View
PRI
ENABLE
HOLDOVER
describes the purpose and behavior of each LED on the clock card.
Pin 1
HOLDOVER
Pin 9
External Clock Source End
Pin
3
1
11
9
SEC
LOS
ACTIVE
FREERUN
FAULT
Chapter 1
Overview
Signal
Receive Tip
Transmit Tip
Receive Ring
Transmit Ring
Figure
1-3.)
uBR - CLK-T1
OL-26705-01