Chapter 1 An Overview of the Cisco IP Phone

What Networking Protocols Are Used?

What Networking Protocols Are Used?

Cisco IP Phones support several industry-standard and Cisco networking protocols for voice communication. Table 1-1provides an overview of the networking protocols that the Cisco IP Phone models 7902G/7905G/7912G supports.

Table 1-1 Supported Networking Protocols on the Cisco IP Phone

Networking Protocol

Purpose

Usage Notes

 

 

 

Cisco Discovery

CDP is a device-discovery protocol that

The Cisco IP Phone uses CDP to

Protocol (CDP)

runs on all Cisco-manufactured

communicate information such as

 

equipment.

auxiliary VLAN ID, per port

 

Using CDP, a device can advertise its

power management details, and

 

Quality of Service (QoS)

 

existence to other devices and receive

 

configuration information with the

 

information about other devices in the

 

Cisco Catalyst switch.

 

network.

 

 

 

 

 

Dynamic Host

DHCP dynamically allocates and assigns

DHCP is enabled by default. If

Configuration Protocol

an IP address to network devices.

disabled, you must manually

(DHCP)

DHCP enables you to connect an IP

configure the IP address, subnet

 

mask, gateway, and an TFTP

 

phone into the network and have the

 

server on each phone locally.

 

phone become operational without you

 

 

 

needing to manually assign an IP address

Cisco recommends that you use

 

or configure additional network

DHCP custom option 150. With

 

parameters.

this method, you configure the

 

 

TFTP server IP address as the

 

 

option value. For additional

 

 

supported DCHP configurations,

 

 

see Cisco CallManager System

 

 

Guide.

 

 

 

 

Cisco IP Phone Administration Guide for Cisco CallManager 3.3, Cisco IP Phones 7902G/7905G/7912G

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Cisco Systems 7905G, 7902G, 7912G manual What Networking Protocols Are Used?, Networking Protocol Purpose Usage Notes
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7902G, 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.
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