3-9
Cisco 7600 Series Router SIP, SSC, and SPA Hardware Installation Guide
OL-5052-14
Chapter 3 Overview: Cisco 7600 Series Router Shared Port Adapters
8-Port Channelized T1/E1 SPA Overview
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. If similar SPAs are connected
back-to-back, both ends of cable will be Siemax.
•
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).
Figure 3-2
shows the connectors on the 4-Port Clear Channel T3/E3 SPA, and
Table 3-5
describes the
signal descriptions for these connectors.
8-Port Channelized T1/E1 SPA Overview
The following sections describe the 8-Port Channelized T1/E1 SPA:
•
8-Port Channelized T1/E1 SPA LEDs, page 3-9
•
8-Port Channelized T1/E1 SPA Interface Specifications, page 3-10
•
8-Port Channelized T1/E1 SPA Cables, Connectors, and Pinouts, page 3-11
8-Port Channelized T1/E1 SPA LEDs
The 8-Port Channelized T1/E1 SPA has three types of LEDs. There are two LEDs for each port on the
SPA, and one STATUS LED as shown in
Figure 3-3
.
Table 3-5
2-Port and 4-Port Clear Channel T3/E3 SPA Connectors
Connector Label
Meaning
TX
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 BNC connector.
RX
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 BNC connector.