Table Of Contents

Technical Specifications

Physical and Operating Environment Specifications

Cable Specifications

Network and Access Port Pinouts

Technical Specifications

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The following sections describe the technical specifications for the Cisco Unified IP Phone 7931G.

•Physical and Operating Environment Specifications

•Cable Specifications

•Network and Access Port Pinouts

Physical and Operating Environment Specifications

Table C-1 shows the physical and operating environment specifications for the Cisco Unified IP Phone.

Table C-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	8.0 in. (20.3 cm)
Width	9.0 in. (22.9 cm)
Depth	7.0 in. (17.8 cm)
Weight	3.0 lb (1.36 kg)
Power Options	•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	Category 3 for 10-Mbps cables 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-9 jack (4-conductor) for handset and headset connection.

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

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

•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.

Network Port Connector

Table C-2 describes the network port connector pinouts.

In this table, "BI" stands for bidirectional, and DA, DB, DC and DD stand for "Data A", "Data B", "Data C" and "Data D", respectively.

Table C-2 Network Port Connector Pinouts 

Pin Number	Function
1	BI_DA+
2	BI_DA-
3	BI_DB+
4	BI_DC+
5	5BI_DC-
6	6BI_DB-
7	7BI_DD+
8	BI_DD-

Access Port Connector

Table C-3 describes the access port connector pinouts.

In this table, "BI" stands for bidirectional, and DA, DB, DC and DD stand for "Data A", "Data B", "Data C" and "Data D", respectively.

Table C-3 Access Port Connector Pinouts 

Pin Number	Function
1	BI_DB+
2	BI_DB-
3	BI_DA+
4	BI_DD+
5	5BI_DD-
6	6BI_DA-
7	7BI_DC+
8	BI_DC-