Technical Specifications

Physical and Operating Environment Specifications

The following table shows the physical and operating environment specifications for the Cisco Unified IP Phone.

Table 1. Physical and Operating Specifications

Specification

Value or range

Operating temperature

32° to 104°F (0° to 40°C)

Operating relative humidity

10% to 95% (non-condensing)

Storage temperature

14° to 140°F (–10° to 60°C)

Height

9.07 in. (23.03 cm)

For Cisco Unified IP Phone 7975G:

8.2 in (20.32 cm)

Width

For Cisco Unified IP Phone 7965G, and 7945G:

10.82 in. (27.48 cm)

For Cisco Unified IP Phone 7975G, 7971G-GE and 7970G:

10.5 in. (26.67 cm)

Depth

  • 2.54 in. (6.45 cm)—with footstand fully closed

  • 6.0 in. (15.24 cm)—with footstand fully open

  • 3.54 in. (9.00 cm)—with optional wall mount kit (Cisco Unified IP Phone 7975G, 7965G, and 7945G)

Weight

3.25 lb (1.47 kg)

Power options

Cisco Unified IP Phone 7975G, 7965G and 7945G:

  • 100-240 VAC, 50-60 Hz, 0.5 A—when using the AC adapter

  • 44V - 57V DC, 0.25 A—when using the in-line power over the network cable

Cisco Unified IP Phone 7971G-GE and 7970G:

  • The phone can receive power from IEEE 802.3af-compliant data switches (Class III).

  • The phone can be powered locally with a power adapter (Cisco part number CP-PWR-CUBE-3=) and the appropriate power cord (power requirements for the power adapter: 100-240 VAC, 50-60 Hz, 0.5 A).

Cables

For Cisco Unified IP Phone 7975G, 7965G, and 7945G:

  • Category 3/5/5e/6 for 10-Mbps cables with 4 pairs

  • Category 5/5e/6 for 100-Mbps cables with 4 pairs

  • Category 5e/6 for 1000-Mbps cables with 4 pairs

    Note 

    Cables have 4 pairs of wires for a total of 8 conductors.

For Cisco Unified IP Phone 7971G-GE and 7970G:

  • Category 3/5/5e for 10-Mbps cables with 4 pairs

  • Category 5/5e for 100-Mbps cables with 4 pairs

  • Category 5e/6 for 1000-Mbps cables with 4 pairs

    Note 

    Cables have 4 pairs of wires for a total of 8 conductors.

Distance requirements

As supported by the Ethernet specification, it is assumed that the maximum cable length between each Cisco Unified IP Phone and the switch is 100 meters (330 feet).

Cable Specifications

  • RJ-9 jack (4-conductor) for handset and headset connection.

  • RJ-45 jack for the LAN 10/100/1000BaseT connection (labeled 10/100/1000 SW).

  • RJ-45 jack for a second 10/100/1000BaseT compliant connection (labeled 10/100/1000 PC).

  • 3.5 mm jack for microphone and speaker connection (for Cisco Unified IP Phone 7971G-GE and 7970G only).

  • 48-volt power connector.

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. The access port is also known as the computer port.

Network Port Connector

The following table describes the network port connector pinouts.

Table 2. Network Port Connector Pinouts

Pin number

Function

1

BI_DA+

2

BI_DA-

3

BI_DB+

4

BI_DC+

5

BI_DC-

6

BI_DB-

7

BI_DD+

8

BI_DD-
Note 

BI stands for bidirectional, while DA, DB, DC and DD stand for Data A, Data B, Data C and Data D respectively.

Computer Port Connector

The following table describes the computer port connector pinouts.

Table 3. Computer (Access) Port Connector Pinouts

Pin number

Function

1

BI_DB+

2

BI_DB-

3

BI_DA+

4

BI_DD+

5

BI_DD-

6

BI_DA-

7

BI_DC+

8

BI_DC-
Note 

BI stands for bidirectional, while DA, DB, DC and DD stand for Data A, Data B, Data C and Data D respectively.

Phone Behavior During Times of Network Congestion

  • Administrative tasks, such as an internal port scan or security scan

  • Attacks that occur on your network, such as a Denial of Service attack