3-56
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Hardware Installation Guide
OL-14126-12
Chapter 3 Overview: Cisco ASR 1000 Series Aggregation Services Routers SPAs
2-Port and 4-Port Clear Channel T3/E3 Serial SPA Overview
Table 3-33 describes the 2-Port and 4-Port Clear Channel T3/E3 SPA LEDs.
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 Mbps/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.
The T3/E3 SPA interface is compliant with ANSI and Telco standards. The interface also provides
support for Management Information Base (MIB) RFC 2496 and T1.231.
2-Port and 4-Port Clear Channel T3/E3 SPA Cables and Connectors
The interface connectors on the 2-Port and 4-Port Clear Channel T3/E3 SPA are 75-ohm coaxial Siemax
types, with one connector and cable for transmit (TX) and one for receive (RX).
The following cables can be used with the 2-Port and 4-Port Clear Channel T3/E3 SPA. The cables have
BNC connectors on one end and the Siemax connectors on the other.
• CAB-T3E3-RF-BNC-M (T3 or E3 Cable, 1.0/2.3 RF to BNC-Male, 10 feet)
• CAB-T3E3-RF-BNC-F (T3 or E3 Cable, 1.0/2.3 RF to BNC-Female, 10 feet)
• CAB-T3E3-RF-OPEN (T3 or E3 Cable, 1.0/2.3 RF to BNC-Open end, 10 feet)
Note The Cisco cable part numbers are 72-4124-01 (with male BNC end) and 72-4131-01 (with female BNC
end).
Table 3-33 2-Port and 4-Port Clear Channel T3/E3 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 E3 or T3
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, and loopback is off.
Amber On Port is enabled by software, and loopback is on.
STATUS 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.