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 (continued)

 

 

 

Networking Protocol

Purpose

Usage Notes

 

 

 

Internet Protocol (IP)

IP is a messaging protocol that addresses and

To communicate using IP, network devices

 

 

sends packets across the network.

must have an assigned IP address, subnet, and

 

 

 

gateway.

 

 

 

IP addresses, subnets, and gateways

 

 

 

identifications are automatically assigned if

 

 

 

you are using the Cisco Unified IP Phone

 

 

 

with Dynamic Host Configuration Protocol

 

 

 

(DHCP). If you are not using DHCP, you must

 

 

 

manually assign these properties to each

 

 

 

phone locally.

 

 

 

Link Layer Discovery

LLDP is a standardized network discovery

The Cisco Unified IP Phone supports LLDP

Protocol (LLDP)

protocol (similar to CDP) that is supported on

on the PC port.

 

 

some Cisco and third-party devices.

 

 

 

 

 

Link Layer Discovery

LLDP-MED is an extension of the LLDP

The Cisco Unified IP Phone supports

Protocol-Media Endpoint

standard developed for voice products.

LLDP-MED on the SW port to communicate

Devices (LLDP-MED)

 

information such as:

 

 

 

•

Voice VLAN configuration

 

 

 

•

Device discovery

 

 

 

•

Power management

 

 

 

•

Inventory management

 

 

 

For more information about LLDP-MED

 

 

 

support, see the LLDP-MED and Cisco

 

 

 

Discovery Protocol white paper:

 

 

 

http://www.cisco.com/en/US/tech/tk652/tk70

 

 

 

1/technologies_white_paper0900aecd804cd4

 

 

 

6d.shtml

 

 

 

Real-Time Control Protocol

RTCP works with Real-Time Transport

RTCP is disabled by default, but you can

(RTCP)

 

Protocol (RTP) to provide QoS data (such as

enable it on a per-phone basis using Cisco

 

 

jitter, latency, and round trip delay) on RTP

Unified Communications Manager. For more

 

 

streams.

information, see the “Network Configuration”

 

 

 

section on page 4-25.

 

 

 

Real-Time Transport Protocol

RTP is a standard protocol for transporting

Cisco Unified IP Phones use the RTP protocol

(RTP)

 

real-time data, such as interactive voice and

to send and receive real-time voice traffic

 

 

video, over data networks.

from other phones and gateways.

 

 

 

 

 

Cisco Unified IP Phone 7970G/7971G-GE Administration Guide for Cisco Unified Communications Manager 7.0

 

OL-15299-01

1-5

 

 

 

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Cisco Systems 7971G-GE, 7970G manual Support, see the LLDP-MED and Cisco, Discovery Protocol white paper, Rtcp, Rtp
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7970G, 7971G-GE specifications

The Cisco Systems 7971G-GE is a sophisticated IP phone designed for enterprise communication, offering a range of features that enhance productivity and collaboration. As part of the Cisco Unified Communications portfolio, this phone is known for its impressive technology and reliable performance.

One of the main features of the 7971G-GE is its high-resolution color display. The 5-inch LCD screen provides users with a visually appealing and intuitive interface, allowing for easy navigation through menus and contacts. The phone supports up to six lines, making it ideal for users who require multiple lines for simultaneous calls. Users can effortlessly manage calls with the ability to switch between lines and access important call features like hold, transfer, and conference calling.

In terms of audio quality, the Cisco 7971G-GE is equipped with high-definition voice technology. This feature ensures crystal-clear sound during calls, reducing background noise and enhancing the clarity of conversations. The phone also supports wideband audio codecs, enabling a richer voice experience that is particularly valuable in business environments.

The phone is designed with user convenience in mind. It offers programmable buttons that can be customized to suit individual needs, allowing easy access to frequently used functions or contact lists. Additionally, the presence indicator feature lets users see the availability of their colleagues in real-time, promoting more effective communication and collaboration.

Networking capabilities are another strong point of the Cisco 7971G-GE. The phone supports both Power over Ethernet (PoE) and standard Ethernet connectivity. This enables easy deployment without the need for additional power outlets. Moreover, the device is compatible with various Cisco communication platforms, integrating seamlessly with existing Cisco infrastructure, which is essential for businesses looking to upgrade their communications systems.

Security is a crucial consideration for modern enterprises, and Cisco addresses this with robust encryption features that protect voice and video calls. The phone supports secure signaling and media encryption, ensuring that sensitive conversations remain confidential.

Overall, the Cisco Systems 7971G-GE is a feature-rich IP phone that combines advanced technology with user-friendly design. Its high-definition audio, customizable features, and seamless integration with Cisco networks make it a popular choice for businesses seeking to improve their communication systems. With its reliability and performance, the Cisco 7971G-GE continues to support effective collaboration in an increasingly connected world.
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