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Chapter 3
Overview: Cisco 7600 Series Router Shared Port Adapters
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 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 SPA interface is compliant with ANSI and Telco standards. The interface also provides support
for Management Information Base (MIB) RFC 2495, RFC 2496, and T1.231.
The 2-Port and 4-Port Channelized T3 SPA supports Frame Relay Fragmentation (FRF.12) and Multilink
Note
Fame Relay (MFR) features for Cisco IOS XR Software Release 3.6.0 and later releases.
2-Port and 4-Port Channelized T3 SPA Cables and Connectors
The interface connectors on the 2-Port and 4-Port Channelized T3 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 Channelized T3 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
provides the signal descriptions for these connectors.
Table 3-3
Connector Label
TX
RX
2-Port and 4-Port Clear Channel T3/E3 SPA Overview
The following sections describe the 2-Port and 4-Port Clear Channel T3/E3 SPA:
•
•
•
OL-5052-14
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 Siemax connectors on the 2-Port and 4-Port Channelized T3 SPA, and
2-Port and 4-Port Channelized T3 SPA Connectors
Meaning
Transmitted signals appear on the center contact, and the outer shield is ground
for the 75-ohm RG-59 coaxial cable you attach to the TX Siemax connector.
Received signals appear on the center contact, and the outer shield is ground for
the 75-ohm RG-59 coaxial cable you attach to the RX Siemax connector.
2-Port and 4-Port Clear Channel T3/E3 SPA LEDs, page 3-8
2-Port and 4-Port Clear Channel T3/E3 SPA Interface Specifications, page 3-8
2-Port and 4-Port Clear Channel T3/E3 SPA Cables and Connectors, page 3-9
2-Port and 4-Port Clear Channel T3/E3 SPA Overview
Cisco 7600 Series Router SIP, SSC, and SPA Hardware Installation Guide
Table 3-3
3-7
- Quick Links:
- Sip and Spa Product Overview
Hide quick links:
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Troubleshooting
