Appendix C Technical Specifications
Network Port Pinouts
C-2
Cisco Unified SIP Phone 3911 Administration Guide for Cisco Unified Communications Manager
OL-14029-01
Network Port Pinouts
Although both the network and access ports are used for network connectivity,
they serve different purposes and have different port pinouts.
Table C-2
describes the network port connector pinouts.
Table C-2
Network Port Connector Pinouts
Pin Number
Function
1
TD+
2
TD–
3
RD+
4
Not used
5
Not used
6
RD–
7
Not used
8
Not used
Power
•
100-240 VAC, 50-60 Hz, 0.5 A—when using the AC adapter
•
48 VDC, 0.2 A—when using the in-line power over the network cable
Cables
•
One (2) pair of Category 3 for 10-Mbps cables or
One (2) pair of Category 5 for 100-Mbps cables
•
RJ-9 jack (4-conductor) for handset and headset connection.
•
RJ-45 jack for the LAN 10/100BaseT connection.
•
48-volt power connector.
Distance Requirements As supported by the Ethernet Specification, it is assumed that most
Cisco Unified IP Phones should be within 330 feet (100m) of a phone closet.
Table C-1
Physical and Operating Specifications (continued)
Specification
Value or Range
Summary of Contents for 3911
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