8-Port Channelized T1/E1 Spa Overview - Cisco 12000 Series Hardware Installation Manual

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
Fame Relay (MFR) features for Cisco IOS XR Software Release 3.6.0 and later releases.
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
end).
Figure 2-2
provides the signal descriptions for these connectors.
Table 2-6
Connector Label

8-Port Channelized T1/E1 SPA Overview

Note
•
•
•
2-8
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
Table 2-6