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Chapter 3
Overview: Cisco ASR 1000 Series Aggregation Services Routers Shared Port Adapters
Table 3-1
LED Label
C/A
A/L
STATUS
2-Port and 4-Port T3/E3 Clear Channel Serial 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 (44.736Mbps /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 T3/E3 Clear Channel Serial SPA Cables and Connectors
The interface connectors on the 2-Port and 4-Port T3/E3 Clear Channel Serial 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 T3/E3 Clear Channel Serial SPA. The cables
have BNC connectors on one end and the Siemax connectors on the other.
•
•
•
The Cisco cable part numbers are 72-4124-01 (with male BNC end) and 72-4131-01 (with female BNC
Note
end).
Figure 3-1
the signal descriptions for these connectors.
OL-14126-03
2-Port and 4-Port T3/E3 Clear Channel Serial SPA LEDs
Color
Off
Green
Amber
Off
Green
Amber
Off
Green
Amber
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)
shows the connectors on the 4-Port T3/E3 Clear Channel Serial SPA, and
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Hardware Installation Guide
2-Port and 4-Port Clear Channel T3/E3 Serial SPA Overview
State
Meaning
Off
Port is not enabled by software.
On
Port is enabled by software, and there is a valid E3 or T3
signal without any alarms.
On
Port is enabled by software, and there is at least one alarm.
Off
Port is not enabled by software.
On
Port is enabled by software, and loopback is off.
On
Port is enabled by software, and loopback is on.
Off
SPA power is off.
On
SPA is ready and operational.
On
SPA power is on and good, and the SPA is being configured.
Table 3-2
describes
3-3
- Quick Links:
- Sip and Spa Compatibility
Hide quick links:
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Troubleshooting
