Cisco Systems 7971G-GE manual Voice Quality Metrics, Mos Lqk, Voice Quality of Calls section on

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Chapter 7 Viewing Model Information, Status, and Statistics on the Cisco Unified IP Phone

Status Menu

Table 7-6 Call Statistics Items (continued)

Item

TxCnt

Avg Jtr

Max Jtr

RxDisc

RxLost

Description

Number of RTP voice packets transmitted since voice stream was opened.

Note This number is not necessarily identical to the number of RTP voice packets transmitted since the call began because the call might have been placed on hold.

Estimated average RTP packet jitter (dynamic delay that a packet encounters when going through the network) observed since the receiving voice stream was opened.

Maximum jitter observed since the receiving voice stream was opened.

Number of RTP packets in the receiving voice stream that have been discarded (bad packets, too late, and so on).

Note The phone will discard payload type 19 comfort noise packets that are generated by Cisco Gateways, which will increment this counter.

Missing RTP packets (lost in transit).

Voice Quality Metrics

 

 

 

MOS LQK

Score that is an objective estimate of the mean

 

 

 

 

opinion score (MOS) for listening quality (LQK)

 

 

 

 

that rates from 5 (excellent) to 1 (bad). This score is

 

 

 

 

based on audible concealment events due to frame

 

 

 

 

loss in the preceding 8-second interval of the voice

 

 

 

 

stream. For more information, see the “Monitoring

 

 

 

 

the Voice Quality of Calls” section on page 9-24.

 

 

 

 

Note The MOS LQK score can vary based on the

 

 

 

 

type of codec that the Cisco Unified IP

 

 

 

 

Phone uses.

 

 

 

 

 

 

 

 

Avg MOS LQK

Average MOS LQK score observed for the entire

 

 

 

 

voice stream.

 

 

 

 

 

 

 

 

Cisco Unified IP Phone 7970G/7971G-GE for Cisco Unified Communications Manager 6.0

 

 

7-20

 

 

 

OL-12232-01

 

 

 

 

 

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Contents Model Information Screen, Status Menu, Installed in the phone. If no CTL file is Model InformationCTL MICSee the Using Cisco Unified IP LSCCall Control Indicates whether the phone is running Protocol Under Sccp or SIPSelect Status Messages Press the Settings buttonStatus Messages Screen Manager Administration section Configuration Menu section onAdding Phones with Cisco Unified CommunicationsNetwork Configuration Menu section on page 4-7forDetails on assigning a static IP AddressUsing the Settings Security ConfigurationAuthentication option on the phone Authentication and Status section onSee the Network Configuration If you are using DHCP, checkDhcp server configuration Menu section on page 4-7 section4-7section for details Screen section on page 7-16 to verify Phone settingPhone. See the Firmware Versions Device Phone Menu section on page 4-7sectionServer has not provided a DNS Server. Check the Dhcp serverMessage Description Possible Explanation and Action Network Statistics Screen Select Network StatisticsDhcp Bound To exit the Firmware Version screen, press the Exit softkey Firmware Versions ScreenSelect Firmware Versions Expansion Modules Screen Sccp Phones Only Select Expansion ModulesCall Statistics Screen Press the Settings button Select Status Select Call StatisticsCall Statistics screen displays these items RxType RxSize RxCnt TxType TxSizeVoice Quality of Calls section on Voice Quality MetricsMOS LQK Status Menu OL-12232-01
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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.