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2-Port and 4-Port Clear Channel T3/E3 SPA Interface Specifications
Figure 21: 2-Port and 4-Port Clear Channel T3/E3 SPA Faceplate
1
C/A (Carrier/Alarm) LED
2
A/L (Active Loopback) LED
3
TX (Transmit) connector
The following table describes the 2-Port and 4-Port Clear Channel T3/E3 SPA LEDs.
Table 19: 2-Port and 4-Port Clear Channel T3/E3 SPA LEDs
LED Label
C/A
A/L
STATUS
2-Port and 4-Port Clear Channel T3/E3 SPA Interface Specifications
The framer processes incoming and outgoing T3 (cbit, m13/m23, and unframe) and E3 (g751, g832, and
unframe) frames. The framer operates at T3/E3 line rates (44.736 /34.368 Mbps) depending on the mode in
which it is configured.
Packet data is transported with a user-configurable encapsulation (such as Point-to-Point Protocol [PPP] or
High-Level Data Link Control [HDLC]), and is mapped to T3 and E3 frames. The encapsulations add transport
overhead to the packet of data frames before transporting, and are stripped when a packet is transported to
the far end.
Cisco ASR 9000 Series Aggregation Services Router SIP and SPA Hardware Installation Guide
30
4
RX (Receive) connector
5
STATUS LED
Color
State
Meaning
Off
Off
Port is not enabled by software.
Green
On
Port is enabled by software, and there is a valid E3 or T3 signal without any alarms.
Amber
On
Port is enabled by software, and there is at least one alarm.
Off
Off
Port is not enabled by software.
Green
On
Port is enabled by software, and loopback is off.
Amber
On
Port is enabled by software, and loopback is on.
Off
Off
SPA power is off.
Green
On
SPA is ready and operational.
Amber
On
SPA power is on and good, and the SPA is being configured.
Overview: Cisco ASR 9000 Series Router Shared Port Adapters
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