Chapter 3 Configuring the Cisco IP Phone Models 7905G and 7912G for SIP

Specifying a Preconfigured VLAN ID or Disabling VLAN IP Encapsulation

VLANSetting parameter:

Bits 0-2—Specify VLAN CoS bit value (802.1Q priority) for signaling packets

Bits 3-5—Specify VLAN CoS bit value (802.1Q priority) for audio packets

Bits 18-29—User-specified 802.1Q VLAN ID

Table 3-1 VLAN-Related Features and Corresponding Configuration

Parameters

 

 

 

 

VLANSetting

Feature

OpFlags Bit 4

OpFlags Bit 5

OpFlags Bit 6

Bits 18-29

 

 

 

 

 

Static VLAN

1

0

1

VLAN ID

 

 

 

 

 

CDP-acquired

0

0

0

Not applicable1

VLAN

 

 

 

 

 

 

 

 

 

No VLAN

1

Not applicable1

No CDP

1

Not applicable1

No CDP and no

0

1

1

Not applicable1

VLAN

 

 

 

 

 

 

 

 

 

1. This variable is not applicable to the feature and the setting of this variable does not affect the feature.

Example

The following procedure shows you how to configure the OpFlags and VLANSetting parameters to allow the phone to use a user-specified VLAN ID. In this example, the voice VLAN ID is 115 (in decimal format).

Step 1 Set bits 4-6 of the OpFlags parameter to 1, 0, and 1, respectively. This setting translates to the following bitmap:

xxxx xxxx xxxx xxxx xxxx xxxx x101 xxxx

The remaining bits of the OpFlags parameter, using all default values, make up the following bitmap representation:

0000 0000 0000 0000 0000 0000 0xxx 0010

 

 

Cisco IP Phone Models 7905G and 7912G Administrator Guide (SIP)

 

 

 

 

 

 

OL-4277-01

 

 

3-5

 

 

 

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Cisco Systems 7912G, 7905G manual VLANSetting, Feature, Bits, Example

7912G, 7905G specifications

Cisco Systems is a leading provider of networking and telecommunications equipment, and among its extensive range of products, the Cisco 7900 Series of IP phones has made a notable impact in enterprise communication. Key models in this series include the Cisco 7905G, 7912G, and 7902G, each designed to enhance productivity through advanced features, intuitive interfaces, and robust technology.

The Cisco 7905G is designed for basic telephony needs and is ideal for administrative environments or areas with high call volumes. It features a large single-line LCD display, providing users with clear visibility of call information. The phone supports Power over Ethernet (PoE), making installation easier and reducing clutter by eliminating the need for an additional power supply. Its hands-free and headset support enhances user convenience, allowing for easy multitasking during calls.

Moving on to the Cisco 7912G, this model is designed for more demanding communication requirements. It features a larger, backlit display, providing improved visibility in various lighting conditions. The Cisco 7912G supports up to 12 programmable line or feature keys, giving users the flexibility to tailor the phone to their specific needs. Additionally, it incorporates advanced audio technologies, such as wideband audio for enhanced voice clarity and a built-in speakerphone, allowing users to communicate effectively in busy environments.

The Cisco 7902G, while offering basic features, is a reliable choice for users who need straightforward, cost-effective telephony solutions. It features an intuitive design with three dedicated buttons for line status, a built-in speakerphone, and support for wideband audio. The phone is geared for users who require essential telephony features without the complexity of additional functionalities, making it suitable for front-desk and general office use.

Overall, these models within the Cisco 7900 series exemplify the company's commitment to providing high-quality enterprise communication tools. With a focus on advanced audio technologies, user-friendly interfaces, and adaptability to various business environments, the Cisco 7905G, 7912G, and 7902G cater to the diverse needs of modern organizations. As companies continue to pursue seamless communication, these IP phones remain a valuable asset in their telephony infrastructure, enhancing collaboration and productivity among teams everywhere.