Cisco CP-7940G-CH1 Administration Guide - Page 140
Cable Specifications, Network and Access Port Pinouts
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Cable Specifications Appendix E Technical Specifications Cable Specifications • RJ-9 jack (4-conductor) for handset and headset connection. • RJ-11 jack for console access (labeled AUX or RS232). • RJ-45 jack for the LAN 10/100BaseT connection (labeled LAN). • RJ-45 jack for a second 10/100BaseT compliant connection (labeled PC). • 48-volt power connector. The diameter of the center pin in the phone power jack (Switchcraft 712A) is 0.1 in. (2.5 mm). The center pin is positive (+) voltage. The miniature power plug required to mate with the power jack on the phone is a Switchcraft 760 or equivalent. Network and Access Port Pinouts Although both the network and access ports are used for network connectivity, they serve different purposes and have different port pinouts. Network Port Connector Table E-2 describes the network port connector pinouts. Table E-2 Network Port Connector Pinouts Pin Number Function 1 TD+ 2 TD- 3 RD+ 4 +48 Volts return1 5 +48 Volts return1 6 RD- 7 +48 Volts source1 8 +48 Volts source1 1. When used to receive power from an inline power card in the Cisco Catalyst switch. Access Port Connector Table E-3 describes the access port connector pinouts. Table E-3 Access Port Connector Pinouts Pin Number 1 2 3 4 5 Function RD+ RDTD+ Not Used Not Used Cisco Unified IP Phone 7960G/7940G Administration Guide for Cisco Unified Communications Manager 7.0 (SCCP) E-2 OL-15498-01