Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.0 (SIP), Cisco IP Phone 7905G/7912G
Technical Specifications
Downloads: This chapterpdf (PDF - 165.0KB) The complete bookPDF (PDF - 2.25MB) | Feedback

Technical Specifications

Table Of Contents

Technical Specifications

Physical and Operating Environment Specifications

Cable Specifications

Network Port Pinouts


Technical Specifications


The following sections describe the technical specifications for the Cisco Unified IP Phone 7905G and 7912G.

Physical and Operating Environment Specifications

Cable Specifications

Network Port Pinouts

Physical and Operating Environment Specifications

Table D-1 shows the physical and operating environment specifications for the Cisco Unified IP Phone 7905G and 7912G.

Table D-1 Physical and Operating Specification 

Specification
Value or Range

Operating temperature

0° to 40°C (32° to 104°F)

Operating relative humidity

10% to 95% (non-condensing)

Storage temperature

-10° to 60°C (14° to 140°F)

Height

20.32 cm (8 in.)

Width

17.67 cm (7 in.)

Depth

15.24 cm (6 in.)

Weight

0.9 kg (1.9 lb)

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

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 Cisco Unified IP Phones should be within 100m (330 feet) of a phone closet.


Cable Specifications

RJ-11 jack for handset connection

RJ-45 jack for the LAN 10/100BASE-T connection (labeled LAN)

48-volt power connector. The diameter of the center pin in the phone power jack (Switchcraft 712A) is .1 inch (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 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 D-2 describes the network port connector pinouts.

Table D-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 D-3 describes the access port connector pinouts.

Table D-3 Access Port Connector Pinouts 

Pin Number
Function

1

RD+

2

RD-

3

TD+

4

Not Used

5

Not Used

6

TD-

7

Not Used

8

Not Used