QoS

Network Audio Quality Display on 4600 Series IP Telephones

With the exceptions of the 4601, 4606, 4612, 4624, and 4690 IP Telephones, all Series 4600 IP Telephones are by default administered to allow the end user an opportunity to monitor network audio performance while on a call. The user guides for each phone provide specific detail on getting to the appropriate screen, what the end user sees, and what the information means.

For 4610SW/4620/4620SW/4621SW/4622SW/4625SW/4630/4630SW IP Telephones, these parameters display in real-time to users on the appropriate screens, while on a call:

Table 5: Parameters in Real-Time

Parameter

Possible Values

 

 

Audio

Yes if a receive RTP stream was established.

Connection

No if a receive RTP stream was not established.

Present?

 

 

 

Received

G.711, G.726A, or G.729.

Audio Coding

 

 

 

Silence

Yes if the telephone knows the far-end has silence suppression Enabled.

Suppression

No if the telephone knows the far-end has silence suppression Disabled, or

 

the telephone does not know either way.

 

 

Packet Loss

No data or a decimal percentage. Late and out-of-sequence packets are

 

counted as lost if they are discarded. Packets are not counted as lost until a

 

subsequent packet is received and the loss confirmed by the RTP sequence

 

number.

 

 

Packetization

No data or an integer number of milliseconds. The number reflects the

Delay

amount of delay in received audio packets, and includes any look-ahead

 

delay associated with the codec.

 

 

One-way

No data or an integer number of milliseconds. The number is one-half the

Network Delay

value RTCP computes for the round-trip delay.

 

 

Network Jitter

No data or an integer number of milliseconds reporting the average delay

Compensation

introduced by the telephone’s jitter buffer.

Delay

 

 

 

For 4602/4602SW IP Telephones, the Network Audio Quality Screen gives the user a qualitative assessment of the current overall audio quality. This assessment is based on separate evaluations of:

●the Packet Loss, and

●the total Network Delay, which is the sum of Packetization Delay, One-way Network Delay, and Network Jitter Compensation Delay, and

●consideration of the codec in use.

Issue 2.2 April 2005 77

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Avaya manual Network Audio Quality Display on 4600 Series IP Telephones, Parameters in Real-Time Possible Values
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4600 specifications

The Avaya 4600 series is a line of IP telephones designed for enterprise communication. Known for its robust features and reliability, the 4600 series has been widely adopted in various business environments, from small companies to large corporations.

One of the standout features of the Avaya 4600 series is its support for Voice over Internet Protocol (VoIP). This enables businesses to make voice calls over the internet, which can significantly reduce telecommunications costs. The integration of VoIP technology also allows for seamless communication across different locations, making it ideal for businesses with multiple branches or remote employees.

The design of the Avaya 4600 series phones is user-friendly, featuring a clear display and an intuitive interface. Users can easily navigate through various options, making calls, accessing voicemail, and managing contacts a straightforward task. Many models in the series include customizable soft keys, which allow individuals to tailor the phone's functions to their specific needs. This flexibility is crucial in environments where employees need to quickly adjust their communications settings.

Another key characteristic is the high-quality audio. The Avaya 4600 series incorporates advanced audio technologies that ensure clear and crisp sound quality during calls. This is essential for effective communication, particularly in large meetings or conference calls where clarity is vital.

The Avaya 4600 series also supports various network protocols, including Session Initiation Protocol (SIP), providing compatibility with a wide range of network infrastructures and allowing organizations to choose the system that best fits their needs. This versatility makes the 4600 series an appealing choice for businesses looking to future-proof their communication systems.

Security is a major consideration in any enterprise communication solution, and Avaya has incorporated features in the 4600 series to protect against unauthorized access and cyber threats. Encryption protocols help safeguard call data, ensuring that sensitive business information remains secure.

In terms of deployment, the Avaya 4600 series can be easily integrated into existing networks, as well as managed remotely, which simplifies the installation and maintenance process. This feature is particularly beneficial for large enterprises that require scalability across multiple locations.

Overall, the Avaya 4600 series combines advanced technology, user-friendly design, and comprehensive security measures to provide a reliable and effective communication solution for businesses. As enterprises continue to adapt to a rapidly changing communication landscape, the Avaya 4600 series remains a strong contender for organizations seeking to enhance their telecommunications infrastructure.
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