Rj-45 Cable Pinouts; Patch Panel Cabling - Cisco 7600 SIP 200 - SPA Interface Processor 200 Hardware Installation Manual

24-Port Channelized T1/E1 ATM CEoP SPA Overview
Table 3-46
Subscriber
Line
Line 21
Line 22
Line 23
Line 24

RJ-45 Cable Pinouts

T1 lines from individual subscribers are attached to RJ-45 connectors on the front of the 24-port patch
panel. Each RJ-45 port accommodates an individual T1 subscriber line.
Pins 1 and 2 and 4 and 5 of the RJ-45 connectors are used for the 24-port CEoP SPA's Transmit (TX)
and Receive (RX) signals. Depending on how the cable is installed between the SPA and its patch panel
(rear), the RJ-45 connectors operate as follows:
•
•

Patch Panel Cabling

If you are connecting two 24-Port Channelized T1/E1 ATM CEoP SPAs to each other, you must cable
both SPA's patch panels together using a T1 cross-over cable or a T1 straight-through cable. The type of
cable you use (cross-over or straight-through) depends on how the CEoP SPAs are cabled to their patch
panels:
•
Cisco 7600 Series Router SIP, SSC, and SPA Hardware Installation Guide
3-78
24-Port Channelized T1/E1 ATM CEoP SPA Cable Connector Pinouts (continued)
Connector Pins
Signal SPA
TX Tip 22
TX Ring 72
RX Tip 46
RX Ring 96
TX Tip 23
TX Ring 73
RX Tip 47
RX Ring 97
TX Tip 24
TX Ring 74
RX Tip 48
RX Ring 98
TX Tip 25
TX Ring 75
RX Tip 49
RX Ring 99
If the TX cable lead is connected to Transmit on the patch panel and RX is connected to Receive:
The SPA's TX signals are transmitted on RJ-45 pins 1 (ring) and 2 (tip).
–
The SPA's RX signals are received on RJ-45 pins 4 (ring) and 5 (tip).
–
If the TX cable lead is connected to Receive on the patch panel and RX is connected to Transmit:
RJ-45 pins 1 and 2 are used for the SPA's RX signal.
–
RJ-45 pins 4 and 5 are used for the SPA's TX signal.
–
If both CEoP SPAs are connected to their patch panels in the same manner (TX to Transmit and
RX to Receive, or TX to Receive and RX to Transmit), use a T1 cross-over cable to connect the
patch panels to each other.
Chapter 3 Overview: Cisco 7600 Series Router Shared Port Adapters
TX Cable Lead RX Cable Lead
21 Not connected
46
Not connected 21
46
22 Not connected
47
Not connected 22
47
23 Not connected
48
Not connected 23
48
24 Not connected
49
Not connected 24
49
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