Chapter 1 An Overview of the Cisco Unified IP Phone

What Networking Protocols Are Used?

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

Networking Protocol

Purpose

Usage Notes

 

 

 

Bootstrap Protocol

BootP enables a network device such

If you are using BootP to assign IP

(BootP)

as the Cisco Unified IP Phone to

addresses to the

 

discover certain startup information,

Cisco Unified IP Phone, the BOOTP

 

such as its IP address.

Server option shows “Yes” in the

 

 

network configuration settings on the

 

 

phone.

 

 

 

Cisco Discovery

CDP is a device-discovery protocol

The Cisco Unified IP Phone uses

Protocol (CDP)

that runs on all Cisco-manufactured

CDP to communicate information

 

equipment.

such as auxiliary VLAN ID, per port

 

Using CDP, a device can advertise its

power management details, and

 

existence to other devices and receive

Quality of Service (QoS) configuration

 

information about other devices in

information with the Cisco Catalyst

 

switch.

 

the network.

 

 

 

 

 

Dynamic Host

DHCP dynamically allocates and

DHCP is enabled by default. If

Configuration Protocol

assigns an IP address to network

disabled, you must manually

(DHCP)

devices.

configure the IP address, subnet

 

DHCP enables you to connect an IP

mask, gateway, and a TFTP server on

 

each phone locally.

 

phone into the network and have the

 

 

 

phone become operational without

Cisco recommends that you use

 

you needing to manually assign an IP

DHCP custom option 150. With this

 

address or to configure additional

method, you configure the TFTP

 

network parameters.

server IP address as the option value.

 

 

For additional information about

 

 

DHCP configurations, refer to the

 

 

“Cisco TFTP” chapter in the

 

 

Cisco Unified CallManager System

 

 

Guide.

 

 

 

HyperText Transfer

HTTP is the standard way of

The Cisco Unified IP Phones use

Protocol (HTTP)

transferring information and moving

HTTP for the XML services and for

 

documents across the Internet and the

troubleshooting purposes.

 

World Wide Web.

 

 

 

 

 

 

Cisco Unified IP Phone 7906G and 7911G Administration Guide for Cisco Unified CallManager

 

 

 

 

 

 

OL-10008-01

 

 

1-5

 

 

 

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Cisco Systems 7911G, 7906G manual Networking Protocol Purpose Usage Notes, Dhcp
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7906G, 7911G specifications

The Cisco Systems 7911G is a versatile IP phone designed to enhance communication in enterprise environments. Targeting workers in various organizational settings, this model is known for its reliability, ease of use, and robust features that cater to both basic and advanced telephony requirements.

One of the key features of the Cisco 7911G is its support for Voice over IP (VoIP) technology. Using this technology allows for the transmission of voice signals over the internet rather than through traditional telephone lines. This not only reduces telephony costs but also offers enhanced functionality that integrates seamlessly with existing communication systems.

The phone is equipped with a monochrome graphical display that provides users with clear visibility of their call status, directory information, and menu options. With a resolution of 128x64 pixels, the screen is large enough to offer important information without overwhelming the user. This simplicity makes it an ideal choice for users who require straightforward functionality without the complexity of advanced features.

Ergonomically designed, the Cisco 7911G features a comfortable keypad with dedicated buttons for frequently used functions such as mute, hold, and transfer. It supports multiple lines, providing users with the ability to manage multiple calls simultaneously. Additionally, it offers programmable line keys that can be customized for speed dial or as soft keys for quick access to features.

The device supports Power over Ethernet (PoE), which allows the phone to receive power through the network cable rather than needing a separate power source. This feature not only simplifies installation but also enhances mobility within the workspace, as it reduces cable clutter.

Another significant characteristic of the Cisco 7911G is its compatibility with Cisco Unified Communications Manager, which ensures centralized management of telephony systems. It also supports a range of audio codecs that help in delivering high-quality audio during calls, reducing latency and improving overall communication quality.

Security is also a focus with the Cisco 7911G, as it features a secure access feature that includes Transport Layer Security (TLS) and Secure Real-Time Transport Protocol (SRTP) for encrypted voice communications. This ensures that sensitive conversations are protected from eavesdropping.

Overall, the Cisco Systems 7911G is a reliable, feature-rich IP phone that provides an excellent solution for organizations looking to upgrade their communication systems. Its combination of user-friendly design, powerful integrations, and security features makes it a cornerstone in the suite of Cisco telecommunications solutions.
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