255-700-025
B-3
PacketStar
™
Access Concentrator 60 User Guide
, Issue 1
Release 6.3.0
Appendix B Pin Configurations
Configuration for the Stratum 3–4 Connector
Ethernet 10Base-T Interface
The AC 60 chassis faceplate also accommodates the Ethernet interface using
standard RJ-45 pin assignments. Figure B-2 shows the pin locations for the
RJ-45 connector for the 10Base-T connector on the faceplates.
Table B-5 describes the pin configuration for the RJ-45 faceplate connector.
Configuration for the Stratum 3–4 Connector
The composite clock signal for the Stratum 3–4 component is a 64-Kbps
bipolar signal with an 8-Kbps bipolar violation signal. Figure B-3 is a diagram
for general reference only. Detailed parameters for the composite clock
signal are described in Bellcore document TA-TSY-000378. ITU G.703.
Figure B-2. Pin Locations on the RJ-45 Connector
Table B-5. Pin Descriptions for the RJ-45 Connector for the CPU Ethernet
Interface
Pin
Description
1
TD+ (transmit to UTP wire)
2
TD– (transmit to UTP wire)
3
RD+ (receive from UTP wire)
4
Not used by 10Base-T
5
Not used by 10Base-T
6
RD– (receive from UTP wire)
7
Not used by 10Base-T
8
Not used by 10Base-T