Appendix C Technical Specifications

Cable Specifications

Table C-1 Cisco SIP IP Phone Operational and Physical Specifications (continued)

Specification

Value or Range

 

 

Cables

Two (2) pair of Category 3 for 10 Mbps cables

 

Two (2) pair of Category 5 for 100 Mbps cables

 

 

Distance Requirements

As supported by the Ethernet Specification, it is

 

assumed that most sets that are deployed in the field

 

will be within 100 m (330 ft.) of a phone closet.

 

 

Cable Specifications

The following cables are required to connect the Cisco SIP IP phone:

RJ-11 for the handset connection

RJ-45 jack for the LAN connection (labeled “10/100 SW”).

RJ-45 jack for a second 10Base-T compliant connection (labeled “10/100 PC”).

48-volt power connector. The diameter of the center pin in the phone power jack (Switchcraft 712A) is .1 inches (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.

Connections Specifications

The Cisco SIP IP phone has two RJ-45 ports that each support 10/100 Mbps half- or full-duplex connections to external devices—the network port and access port. You can use either Category 3 or 5 cabling for 10 Mpbs connections, but use Category 5 for 100 Mbps connections. On both the LAN-to-phone port (left RJ-45 port facing the back of the phone) and PC-to-phone port (right port), use full-duplex to avoid collisions. Use the LAN-to-phone port to connect the phone to the network a LAN-to-phone jack. Use the PC-to-phone port to connect a network device, such as a computer, to the phone.

For a diagram identifying the different ports on the back of the Cisco SIP IP phone, see the “Connecting the Phone” section on page 2-16.

 

 

Cisco SIP IP Phone 7960 Administrator Guide

 

 

 

 

 

 

78-10497-02

 

 

C-3

 

 

 

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Cisco Systems IP phone 7960 manual Cable Specifications, Connections Specifications