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A-88 Cisco 4000 Series Installation Guide
Channelized E1 Pinouts
Table A-37 T1 Straight-Through Cable Pinouts
Channelized E1 Pinouts
For the CE1 module, four serial cables are available from Cisco Systems. All three have
DB-15 connectors on the CE1 end and either BNC, DB-15, twinax, or RJ-45 connectors on
the network end. Figure A-22, Figure A-23, Figure A-24, and Figure A-25 show the E1
interface cables.
Figure A-22 E1 Interface Cable for 75-Ohm, Unbalanced Connections
(with BNC Connectors)
Transmit Ring 9 11 Receive Ring
Receive Ring 11 9 Transmit Ring
15-Pin DB Connector 15-Pin DB Connector
Signal Pin Pin Signal
Transmit Tip 1 1 Transmit Tip
Transmit Ring 9 9 Transmit Ring
Receive Tip 3 3 Receive Tip
Receive Ring 11 11 Receive Ring
Table A-36 T1 Null-Modem Cable Pinouts (Continued)
15-Pin DB Connector 15-Pin DB Connector
Signal Pin Pin Signal
H2421
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