Cisco 12000 Series

2-10
8-Port Fast Ethernet SPA Overview
Warning Shielded twisted pair (STP) T1/E1 cables must be used to comply with EN55022/CISPR22 Class A
emissions requirements. For revisions 73-8358-05 through 73-8358-08 Shielded Twisted pair (STP)
T1/E1 cables must be used to comply with FCC Class A emissions requirements.
8-Port Channelized T1/E1 SPA Cables, Connectors, and Pinouts
Note The terms RJ-45 and RJ-48c are sometimes used interchangeably. The RJ-48c is the jack or receptacle;
the RJ-45 is the connector.
RJ-45 Connector
8-Port Fast Ethernet SPA Overview
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32770
RJ-45
RJ-48c
Pin 1
Pin 8
Table 2-8 RJ-45 Connector Pinouts
Pin Signal Description
RX– Receive ring –
2 RX+ Receive tip +
3 NC No connection
4 TX– Transmit ring –
5 TX+ Transmit tip +
6 NC No connection
7 NC No connection
8 NC No connection