3-15
Cisco 7600 Series Router SIP, SSC, and SPA Hardware Installation Guide
OL-5052-08
Chapter 3 Overview: Cisco 7600 Series Router Shared Port Adapters
2-Port and 4-Port OC-3c/STM-1 POS SPA Overview
The following sections describe the 2-Port and 4-Port OC-3c/STM-1 POS SPA:
• OC-3c/STM-1 POS SPA LEDs, page 3-15
• OC-3c/STM-1 POS SPA Interface Specifications, page 3-15
• OC-3c/STM-1 POS SPA SFP Optical Transceiver Modules and Cables, page 3-16
OC-3c/STM-1 POS SPA LEDs
The 2-Port and 4-Port OC-3c/STM-1 POS SPAs have three types of LEDs. There are two LEDs for each
port on the SPA, and one Status LED. Figure 3-10 shows an example of these LEDs on a 4-Port
OC-3c/STM-1 POS SPA.
Figure 3-10 4-Port OC-3c/STM-1 POS SPA Faceplate
The 2-Port and 4-Port OC-3c/STM-1 POS SPA LEDs are described in Table 3-10.
OC-3c/STM-1 POS SPA Interface Specifications
The framer processes incoming and outgoing SONET or SDH frames. The framer operates at
OC-3c/STM-1 (155.52 Mbps) line rates.
1 C/A (Carrier/Alarm) LED 3 STATUS LED
2 A/L (Active Loopback) LED
STA
TUS
0
1
2
3
A/L
C/A
A/L
C/A
A/L
C/A
A/L
C/A
122938
1
2 3
Table 3-10 2-Port and 4-Port OC-3c/STM-1 POS SPA LEDs
LED Label Color State Meaning
C/A Off Off Port is not enabled by software.
Green On Port is enabled by software, and there is a valid SONET signal
without any alarms.
Amber On Port is enabled by software, and there is at least one alarm.
A/L Off Off Port is not enabled by software.
Green On Port is enabled by software, loopback is off.
Amber On Port is enabled by software, loopback is on.
STATUS Off Off SPA power is off.
Amber On SPA power is on and good, and SPA is being configured.
Green On SPA is ready and operational.
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